Answer:4,050
Step-by-step explanation:
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
Answer:5(4a+9)
Step-by-step explanation:
Step-by-step explanation:
30 minutes because you can just subtract Geoge's time