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 ...

For example, to write the formula for calculating ... Google Docs' equations editor is based on LaTeX syntax. As a result, you can use shortcuts to write math notations quickly.