Hi could someone tell me how to solve this, you don’t even have to tell me the answer I’m just confused on this math and need help with how to do it! (Will give 33 points (and POSSIBLY Brainliest if I’m able to)!

Answer:
132 ft
Step-by-step explanation:
The radius is 21 ft
We want to find the circumference
C = 2 * pi *r
Letting pi = 22/7
C = 2 * 22/7 * 21
C = 132 ft
Answer:
We want to find the circumference