The radius of a circle is 7 kilometers. What is the length of a 90° arc?

Question

asked May 26, 2022 76.6k views

2 Answers

Kedare · Answer 1 · 2022-05-31T20:10:59+0000

Find the length of the circumference:

Circumference = 2 x pi x radius

Circumference = 2 x 3.14 x 7

Circumference = 43.96 kilometers

90 degrees is 1/4 of a circle ( 360/4 = 90)

Arc length = 43.96/4 = 10.99 kilometers

(Round answer as needed)