Please answer ASAP, its due today. Do show your work pleaseeeee, I just don't understand this question (It's in the attachment). Ty!

Answer:
13a) You need to find the Circumference = [tex]\pi x^{2}[/tex] = [tex]\pi[/tex]x 50
= 2500[tex]\pi[/tex]
=7853.98 around 7854 inches