Question

Question: The radius of a circle is 16 cm. Find an equation that expresses the ratio of the circumference of the circle to the circle's diameter as π. Show all steps.

Answer 1

C/d = pi

Explanation:

The circumference is given by

C = 2* pi *r

C = 2* pi *16

C = 32 pi

The diameter is 2 times the radius

d = 2*16 = 32

C = pi *d

Divide each side by d

C/d = pi *d/d

C/d = pi