Answer :
What is the area of a circle formula?
The area of a circle formula:
[tex] \pi r^2[/tex]
So all you have to do...
is plug in 20 for r!
[tex] 20 \pi ^2[/tex]
20 x 20 is 400.
[tex]400 \pi [/tex]
If you don't want pi...
400 x pi is about:
1256.64
The answer is (C).
The area of a circle formula:
[tex] \pi r^2[/tex]
So all you have to do...
is plug in 20 for r!
[tex] 20 \pi ^2[/tex]
20 x 20 is 400.
[tex]400 \pi [/tex]
If you don't want pi...
400 x pi is about:
1256.64
The answer is (C).
