Question

Find the circumference and the area of a circle with radius 4km.

Write your answers in terms of π, and be sure to include the correct units in your answers.

4km

Answer 1

16pi km² / 8pi km

Explanation:

r = 4

A = pi(r²)

4² = 16

A = 16pi km²

C = 2r(pi)

2r = 8

C = 8pi km