Question

Find the length of an arc made by a 180-degree central angle in a circle with a 10ft radius

Answer 1

the length of an arc = 10π ft.

Explanation:

The length of an arc with angle Θ and radius r will be equal r * Θ

note the angle must be in radian

Given: Θ = 180° = π and radius = r = 10 ft.

So, the length of the arc = π * 10 = 10π ft.