I Thought Pie Were Round

To calculate the area of a circle must first sqaure the radius, meaning the radius must be multiplied by itself, then multiple the product by Pi (3.14), and then voila the area of the circle is found!

I thought pie were round?

How do I find radius if the diameter is given? Simply divide the Diameter by two using the following equation:Radius = Diameter ÷ 2

Pi 3.1415926535897932384626433832795028841971

Calculating Area of a Circle