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 formula come from?

This means that, using Pythagoras’ theorem, the equation of a circle with radius \(r\) and centre (0, 0) is given by the formula \(x^2+ y^2= r^2\). Find the equation of a circle with radius 3 ...

According to crop circle researcher Lucy Pringle the pattern contains a hidden code for a complex mathematical equation called ... and concepts from advanced mathematics have appeared in farmers ...