The diameter of a semicircle is 12.2 inches. What is the semicircle's perimeter? Use 3.14 for ​𝜋 and round your answer to the nearest hundredth.

Answer 1

Perimeter of semicircle = (1/2)circumference + diameter , where circumference = π d
= (1/2)π (12.2) + 12.2
= 6.1π + 12.2
= ...
I will let you do the arithmetic