Question

Find the circumference of circle described. Round to the nearest hundredth.

a. radius =2.5 centimeters

Answer 1

15.71 cm

Explanation:

circumference is
`\pi`d

diameter is 2r

radius = 2.5 cm so the diameter is 2.5*2 = 5 cm

circumference =
`\pi` (5) -> 15.707

rounded to the nearest hundredth is 15.71 cm