Question

What is the area of a semicircle that has a radius of 20 feet?

Answer 1

`200\pi` or 628.3185

Explanation:

Area of a semicircle is equal to
`(\pi r^(2))/(2)`. So, when the radius is 20, the area of the semicircle will be
`(\pi (20)^(2) )/(2) =(400\pi )/(2) =200\pi =628.3185`.