Question

What is the area of a circle with a radius of 6 inches? (Leave your answer in terms of Pi. This means: do not multiple by 3.14, leave the pi symbol in its place) a 12 pi inches squared b 9 pi inches squared c 81 pi inches squared d 36 pi inches squared

Answer 1

D. 36 pi.

Explanation:

The area of a circle is A = pi*r^2

if the radius is 6 inches then substitute it like this:

A = 3.14(6)^2

A = 3.14(36) - 6 times 6 = 36

A = 36 pi - since you leave pi, it's just 36.