Question

What is the best approximation for the circumference of a circle with a radius of 18 ft?

Use 3.14 to approximate pi.

21.1 ft

36 ft

56.5 ft

113.04 ft

Answer 1

C = 2πrC = 2x18x3.14
C=113.04
answer is 113.04 ft(last choice)

Answer 2

Circumference = 2πr = 2 x 18 x π = 36π = 36 x 3.14 = 113.04 ft.

Hope this helps!