Find the arc length of a central angle of 90° in a circle whose radius is 4 inches

Question

asked May 13, 2020 176k views

1 Answer

Rohitashv Singhal · Answer 1 · 2020-05-17T12:59:53+0000

Answer:

≈ 6.28 inches

Explanation:

The length of the arc is

arc = circumference × fraction of circle

= 2πr ×
(90)/(360)

= 2π × 4 ×
(1)/(4) = 2π ≈ 6.28 inches