To find the equation of a circle when you know the radius and centre, use the formula \({(x - a)^2} + {(y - b)^2} = {r^2}\), where \((a,b)\) represents the centre of the circle, and \(r\) is the ...

As a tangent is a straight line it is described by an equation in the form \(y - b = m(x - a)\). You need both a point and the gradient to find its equation. You are usually given the point - it's ...

We will continue hosting mathematics competitions. If the online option is available for the contest, we will opt for that. For in-person competitions, we expect a minimum of 5 participants to host ...

So you have a circle. What is the area of that circle? Surely everyone remembers that the area of a circle is: Where Pi (π) is of course the number and r is the radius of the circle. Where does this ...

Math riddles are not to everyone's taste. They need a great deal of critical and analytical thinking and are difficult, intriguing, and thought-provoking. They might seem difficult at first, but once ...

Pi represents the ratio of the circumference of a circle to its diameter. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Pi is a number that ...

Circle to Search can now help students with homework, making it easy to search for instructions and answers without leaving the digital homework screen. Later this year, Circle to Search will be able ...

An airplane, traveling with a constant engine speed, makes a large and perfect circle parallel to the ground. There is no wind. Will it complete the same circle in greater, less or the same time if ...

I had never heard the term, “math circle,” until a few weeks ago when I stumbled across an article in The Atlantic about the growing number of American kids excelling in the highest levels of math. It ...

Circle to Search on Android can now help students learn to solve mathematical word problems thanks to Google’s new LearnLM model. Circle to Search on Android can now help students learn to solve ...