What is the approximate circumference of the semicircle

Hello from MrBillDoesMath!
Answer:
39.3
Discussion:
Circumference of full circle = 2 Pi R = 2 Pi ( 12.5). So circumference of semicircle is (1/2) ( 2 Pi * 12.5) = Pi * 12.5. Using 3.14 for Pi, Pi * 12.5 is 39.3
Thank you,
MrB