Question

Find the exact area of the circle with the given radius.

r = 4.5 m

A.
4.5π m²

B.
9π m²

C.
20.25π m²

D.
81π m²

Answer 1

i say C or D

Answer 2

Area = \(\bf\Large \pi r^2\)

Answer 3

?

Answer 4

they gave you r = 4.5

so plug it in :)

Answer 5

to?

Answer 6

3.14 x 4.5^2 .. now solve

Answer 7

ok

Answer 8

All you need to do is find out what 4.5 * 4.5 = ?

Answer 9

then multiply that by pi (3.14)

Answer 10

oh yes since the pi symbol is next to the answer choices, we only need to find 4.5^2 :D

Answer 11

so B