Question

Find the radius. Round your answer to the nearest tenth.
Arc length 104 units
Theta 90

Answer 1

66.2 units

Explanation:

Use the arc length formula, s = θr

Convert the angle measure to radians:

90 degrees =
`(\pi )/(2)` radians

Plug in the arc length and angle measure, then solve for r:

s = θr

104 = (
`(\pi )/(2)`)(r)

66.2 = r

So, the radius is 66.2 units