Question

A circle has a diameter of 4 meters.

What is its perimeter (to the nearest hundredth)?

What is its area (to the nearest hundredth)?
m^2

Answer 1

Explanation:

r = d/2

r = 4/2

r = 2

pi = 3.14

Circumference = 2 * pi * r

Circumference = 2 * 3.14 * 2

Circumference = 12.56

Area = pi r^2

Area = 3.14 * 2^2

Area = 4 * 3.14

Area = 12.56