Question

The circumference of a circle is 36 pi inches.What is the radius of this circle

Answer 1

r = 18 inches

Explanation:

C = 36π

C = 2π·r

36π = 2π·r | : 2π

r = 18 inches

Answer 2

18

Explanation:

2πr=36π ⇒ r= 36π/2π= 18