Question

Find the arc length of the semicircle.

Either enter an exact answer in terms of it or use 3.14 for IT and enter your answer as a decimal.

Answer 1

A semicircle is a half of a circle.

Find the circumference of a full circle then divide in half.

Circumference = pi x r x 2

Circumference = 3.14 x 9 x 2 = 56.52

Semicircle = 56.52/2 = 28.26