Question

- Find the circumference of the circle with the given radius or diameter. Use 3.14.

diameter = 10 cm
A. 15.7 cm
B. 314 cm
C. 78.5 cm
D. 31.4 cm

Answer 1

Circumference = pi x diameter

= 3.14 x 10

= 31.4 cm

The answer is D. 31.4 cm.

Answer 2

C = 31.4 cm

Explanation:

C = pi * d where d is the diameter

C = 3.14 * 10

C = 31.4 cm