Answer: 900π
Step-by-step explanation: To calculate the area of a circle, we do πr^2, where r is the radius. The radius is 30, so the answer is 900π.
Hope this helps!
Answer: E
Step-by-step explanation:
Answer:
i think its D
sry if im wrong
step-by-step explanation:
You multiple it by 20....
1:20
2:40
3:60
4:80
5:100
So it’s 80 inches by 100 inches (80x100) =800 square feet
Answer:

Step-by-step explanation:

So, 
= 
Hope this helps :)