Question

What is the length of arc S shown below? Enter an exact expression in units. The angle in the figure is a central angle in radians.

Answer 1

15pi

Explanation:

Khan

Answer 2

The length of arc S = 47.1

Explanation:

The radius of the circle = 10

The central angle of the arc = 3
`(\pi )/(2)`

By formula, S = rΘ

where S is the lenth of the arc

r is the radius of the circle

Θ is the central angle of the arc

substituting the values in the formula, we get

S = rΘ = 10 (3
`(\pi )/(2)`) = 15
`\pi` = 47.1