Question

What is the circumference of a circle with a radius of 8 cm? use 3.14 as an approximation for .
a. 39.48 cm
b. 42.75 cm
c. 45.82 cm
d. 50.24 cm

Answer 1

50.24 cm, the equation is 2 x 3.14 x 8 cm (radius)

Answer 2

D (50.24) is closest.

C = 2pi*r 

C = 2pi*8

C = 50.27

Answer = D

Hope this helps! :)