Answer Checking

Question

Find the length of the arc of a circle of diameter 10 meters subtended by a central angle of π/3 radians.

Round answer to two decimal places.

My answer: 10.47 meters

Answer 1

The formula to use is s = rθ, where s is the arc length, r is the radius and θ is the radian measure of the central angle.

So, we have s = 5(π/3)

Answer 2

The length of the arc of the internal angle -( arc angle/full circle angle) * Circumference

(π/3 / (2π))*πd = 1/6 * (10m)π about 5.23 m