Question

How do you calculate the area of a circle with a radius of 5cm?

Answer 1

The formula to calculate the area of a circle is

`A = pi r^2`

This means that if `r = 5 "cm"`, the area is

`A = 5^2pi " cm"^2 = 25 pi " cm"^2 ~~ 78.539816 " cm"^2`