Question

A circle has a diameter of 8 m. what is the circumference? use 3.14 for pie

Answer 1

Answer: 25.12 m

Explanation:

d = 8 m
r = 8/2 = 4 m
π = 3.14

Circumference = 2πr

Therefore,
= 2πr
= 2 * π * r
= 2 * 3.14 * 4
= 6.28 * 4
= 25.12 m

Circumference = 25.12 m

Answer 2

radius = half of diameter
radius = 4m

circumference of a circle = 2πr
circumference = 2(3.14)(4)
circumference = 25.12