Question

How do you find circumference of a diameter of a circular glass lens is 8. 7 centimeters

Answer 1

27.3 or 8.7pi

Explanation:

Circumference = 2×pi×R

To find the circumference, we need to find R which is the radius

Diameter = 8.7 cm

Radius = 1/2 × diameter = 8.7÷2 = 4.35 ccm

So circumference = 2 × pi × 4.35 = 8.7 pi = 27.33185 = 27.3