Here Mr Misonet tries to teach to compute circumference of a circle when radius is given. First he convince you the formula. The circumference of a circle is proportionately equals to "pie" times of its diameter,where the value of "pie" is equal to 3.14 and diameter is equal to two times radius. Then he puts the value of the diameter of the given circle and calculate the value of the circumference and also make you understand how to multiply the numbers with decimals. And lastly he makes your...
Simonc1973 teaches you how to work out the circumference of a circle. You start with a circle and draw a line across the circle. That's called the diameter. You multiply the diameter with Pi, which is 3.141. The video is even more amazing being taught by Harry Chapple, a 4 year old MENSA member, who is a maths child genius. He simply takes the ruler, measures the diameter and then calculates the result of multiplying it by Pi's value. The common value for Pi is 3.14. For very accurate results...
In this video tutorial the instructor shows how to find the slope of a line given two points with fractional values. To do this first name your two points as point 1 with coordinates as x1, y1 and point 2 with coordinates x2, y2. Then substitute the values in the equation of the slope which is slope m = (y2 - y1) / (x2 - x1). Now all you have to do is simply the fraction after substituting the point values. Be careful about the signs while substituting in the formula. Now finally after solvin...
In this video the instructor shows how to solve logarithmic equations. To solve a logarithmic equation, the first thing you have to do is try to get one logarithmic term if possible. To subtract two logarithmic terms use the formula Log (a) – Log (b) = Log (a/b). Now to get rid of logs, perform exponentiation of the base. Exponentiation of the base is raising a number to the power of the logarithmic term where the number is the base of the logarithmic term. Here the value turns out to be the ...
This video explains how to find the area of irregular shapes. Draw the shape on a grid or graph paper. This will help you divide your shape into pieces. Draw dotted lines to divide the shape into squares, rectangles or triangles. For instance, if you have an "L" shape, you can divide the shape into two rectangles. Be sure your shapes do not overlap. Calculate the area of each individual shape. The graph paper will help you determine the length and width of each shape. Add the resulting areas ...
Wondering how to use a mean and scatter plot for statistics? Just follow the few simple steps as below.
Doina Popovici's video explains how to calculate the area of a ring. She takes us really slow, down to all the steps of this process. It's very important that she explains every math formula and operation so you cannot get lost into this solving. The video uses nice pictures and colors in order to make learning easier and nicer for those who are interested. At the end of the video you'll surely be able to solve by yourself a problem like that and your appetite for geometry will grow significa...
In this tutorial the author explains of how to find percentages using examples. He explains that x percent of some number y is x multiplied by y and divided by 100. He goes on and explains this concept with numerous examples. He suggests a short cut to movie the decimal point of a number two digits to the left to divide that number by 100. The author demonstrates many more similar tricks and short cuts using which one can easily solve percentage problems. So if you are looking for a good tuto...
In this tutorial the instructor shows how to compute the Surface Area of a Cone. He explains that you need to find the individual surfaces areas first. Hence the bottom part of the cone which is circular can be calculated as Pi*r*r, where r is the radius of the base circle. Now for the sides surface of the cone, it looks like a sector and he derives its area thorough some deduction. Now he adds both the base surface area of the cone, and the lateral surface of the cone which finally gives the...
In this tutorial the author shows how to find the area of Rectangles, Triangles and Parallelograms. He says that an area of a figure is nothing but the amount of space taken up by that figure. He now explains that the area of rectangle is length times the breadth. He demonstrates it with an example. Now he says that an area of a parallelogram is base times height. He also demonstrates how to find the area of a parallelogram. Finally he shows the area of a triangle is half times the product of...
This video is an entertaining way of learning how to quantify how much time has elapsed from one point to another. It opens with a mischievous person using an unauthorized computer, claiming he had only been on for a shorter time than what was calculated by the owner. The video then instructs how to figure out such a calculation by creating a T-chart. One the left side of the T-chart, the previous time is shown, along with new times as each hour or minute is added. On the right, the desired t...
In this video tutorial the instructor shows how to derive the formula to compute interest compounded annually. He starts with explaining the basic concepts like principle which is the amount you borrow and the rate of interest or annual percentage rate (APR), which is the rate at which you pay the interest up on the borrowed principle. He shows that the amount after the end of one year is amount A = P(1+APR),and he goes on and generalizes how to compute it for n years. This video shows how to...
This video presented by Cris Ippolite makes a comparison between flat files and relational databases made with FileMaker Pro 10. It starts by showing flat files, which programs like Microsoft Excel use. Flat files have a big disadvantage: they cannot communicate with other files, even those with related data. If you wish to make your job easier, you should use relational databases. With databases, the tables communicate between one another. Once you store an entry in a table, you can use it i...
Kathy Kaehler, author, celebrity trainer, spokesperson and mother, gives us a rundown of the best exercises for fellow women and moms on how to target their belly fat and love handles, and specifically the best ways to tighten these areas. Kathy first does advise us that if you're going to be targeting like this the most important thing first will be cardio and general fitness. Then, she offers us first the side plank, where you place one elbow to the ground, lying on your side, and then elev...
Learn how to apply the fundamental rule of proportions just follow simple few steps. First step is take two fractions and equate them. For example (Top/Bottom)=(Top/Bottom).
Mean and standard (or normal) deviation may be hard to understand at first, but with the help of this handy little guide from the pros at Exam Solutions you will be up to speed in no time.
Ever wanted to know what your GPA score is? Your GPA is your grade point average, which is a measure of a students achievement in college. This means all your grades are averaged and your are given a cumulative "GPA". Most colleges and universities will figure up your scores for you but you can learn to do it on your own so that you can keep checking up on your scores and stay at the top of your game. This can be beneficial to students looking to better their grades.
Building your own bike can be an exhilarating and fun experience for anyone, even the most novice of craftsmen. With this tutorial you can learn to start building the rear wheel of a bicycle. He shows you websites to help you calculate exactly how long your spokes need to be for the wheel, where to find measurements on the skeleton of the wheel itself, and clarifies any confusing terminology that you might not be familiar with. After you have all your measurements for both sides of the wheel ...
In this tutorial the instructor shows how to find the surface area of a sphere. He explains the equation to calculate the surface area of a sphere as 4 * Pi * r * r , where r its the radius of the sphere. Now if you have the radius of the sphere, by substituting its value in this equation and substituting the value of Pi, you can obtain the surface area of a sphere. If you want to compute the surface area of a sphere watch this video where it is clearly explained how to compute it along with ...
In this Excel magic trick video the tutor shows how to use the years worked formula using Yearfrac, Int and Datedif functions. He says that using this trick you can find out how many years some one has worked if we know his starting date and ending date i.e. he shows how to extract the difference in years directly by using formula to calculate it. He shows how to use Yearfrac function which gives the number of years in decimal form. He also shows how to extract integer from the decimal using ...
In this video tutorial the author shows how to use the Cosine Law. He shows how to find an angle of a triangle where he know all the sides of a triangle, using the cosine Law. He uses a lower case letter to designate a side and a capital letter to designate an angel apposite to that side. He gives the formula for the cosine law using a triangle as an example. Now he goes on and demonstrates how to use a scientific calculate. He shows how to use the degree mode in the calculator to solve these...
This is a one of the coolest videos about arithmetic sequence, it has a very clear explanation about the arithmetic sequence formula and also more than one example which would help the viewer to learn this formula and its implementation in a easier way. This video is a also very helpful for the people who appear for interview since it is a very basic formula that every science student must remember.
How do you know if you should lose weight is a question people often ask. For the most part the need for weight loss should be determined by how you feel in your own body. There are some calculations that doctors use to determine if you need to lose weight. One of those calculations is BMI or Body Mass Index. BMI is based upon a fairly difficult equation. BMI is figured by multiplying your weight by 703 then dividing by your height squared. A body mass index over 25 is considered overweight. ...
Impress your friends! Learn the game of kings and queens. Step 1: Set up the queens and kings
This science video explains the relationship between buoyancy and density using hot air balloons, fish and cruise ships as examples of objects using buoyant force. This video tutorial also includes instructions for calculating the density of a rectangular prism and a liquid. If you like science experiments, you can't miss this one.
Check out this instructional math video that demonstrates how to calculate mathematical functions and graphs. In this 9th lesson, learn how to solve on SAT Algebra problems using the Official SAT Study Guide (as always). Here are the math problems and their page numbers that this video covers:
The obliques exercise is a classical pilates exercise which targets the abdominal muscles to flatten the stomach and strengthen the core. Keeping the elbows wide helps keep the shoulders down and increases the rotation in the trunk, which helps shrink your waist. Be sure to stretch your legs fully each time and stop the knee at 90 degrees of hip flexion to encourage greater strengthening of the abdominal muscles. Watch this how to video and you will be strengthening your obliques with pilates...
Grandmaster Alexandra Kosteniuk shows you how to play chess in this chess video tutorial, but wait, where's Alexandra? For this chess master class, guest star GM Laurent Fressinet from France will be filling in to show you how to play one of his games from Warsaw (2005), Fressinet vs Postny.
In this video tutorial, Chris Pels will show how to deploy a web site using the Copy Web Site Tool in Visual Studio. First see how to connect to a remote web site and deploy an entire site to the target location. Next, learn how to synchronize an entire source and target web site. In addition, see how to copy and synchronize individual or groups of files including how the Copy Web Site tool provides status indicators of differences between files. As part of this process see how the tool provi...
This three part tutorial covers how to use Google Earth - including some cool features you may not know about. The first part goes over the basics, the second part shows you how to import higher resolution images and textures, and the third part shows you how to add placemarks, calculate distances, add overlays, etc.
Starting a business has to involve a desire to benefit someone else other than you. If all your reasons for starting a business are to benefit you, chances are good that you have missed the big picture. At least one reason you have to want to stat a business needs to be to help someone else. Either use proceeds from the business to help a charity of your choice or to solve a problem or provide a solution to a need for the target group that your business serves. Focus on one issue to start wit...
If you think that card counting is only a thing in the movies then think again. You too can try a couple of methods to help you count cards. Like anything, the more you work on it the better you will be.
It’s time for science. You are able to calculate the molar mass for a compound using the periodic table and the amount of compound involved. You might need to know this in your everyday life but you will definitely need this in a chemistry class.
So you've managed to get a shell on the target, but you only have measly low-level privileges. Now what? Privilege escalation is a vast field and can be one of the most rewarding yet frustrating phases of an attack. We could go the manual route, but like always, Metasploit makes it easy to perform local privilege escalation and get root with its exploit suggester module.
SMB (Server Message Block) is a protocol that allows resources on the same network to share files, browse the network, and print over the network. It was initially used on Windows, but Unix systems can use SMB through Samba. Today, we will be using a tool called Enum4linux to extract information from a target, as well as smbclient to connect to an SMB share and transfer files.
EternalBlue was a devastating exploit that targeted Microsoft's implementation of the SMB protocol. Metasploit contains a useful module that will automatically exploit a target, as long as it's vulnerable. But what if we wanted to exploit this vulnerability without Metasploit holding our hand? It can be done using a Python file to exploit EternalBlue manually.
Gathering information on an online target can be a time-consuming activity, especially if you only need specific pieces of information about a target with a lot of subdomains. We can use a web crawler designed for OSINT called Photon to do the heavy lifting, sifting through URLs on our behalf to retrieve information of value to a hacker.
Open-source intelligence researchers and hackers alike love social media for reconnaissance. Websites like Twitter offer vast, searchable databases updated in real time by millions of users, but it can be incredibly time-consuming to sift through manually. Thankfully, tools like Twint can crawl through years of Twitter data to dig up any information with a single terminal command.
Websites and web applications power the internet as we know it, representing a juicy target for any hacker or red team. TIDoS is a framework of modules brought together for their usefulness in hacking web apps, organized into a common sense workflow. With an impressive array of active and passive OSINT modules, TIDoS has the right instrument for any web app audit.
You may not know it, but the IPv4 address of your computer contains tons of useful information about whatever Wi-Fi network you're on. By knowing what your IPv4 address and subnet mask are telling you, you can easily scan the whole network range, locate the router, and discover other devices on the same network.
