Question

The circumference of a circle is 31.4 miles. what is the circle's diameter? c=31.4 mi

Answer 1

Circumference = 31.4 miles

$2 \pi r$ = 31.4

$2* 3.14 * r$ = 31.4

$2r = \frac{31.4}{3.14}$

2r = 10

r = 5

Hence, diameter = 2r = 2 * 5 = 10