Question

Could someone check my answer? (Finding the area question)

Answer 1

Do you know how to find the area? o:

Answer 2

Firts find the area of the whole circle, so you have A = pi r^2

Answer 3

3.14 and 12 squared right?

Answer 4

right

Answer 5

then what? o:

Answer 6

then find the area of the circle without the black portion, so now you have:
r= 9

Answer 7

so, 3.14 * 9 right?

Answer 8

then subtract both and the difference would be the area of the black ring

Answer 9

right

Answer 10

i got 28.26

Answer 11

no, the area would be
A = 9^2 x 3.14

Answer 12

254.34

Answer 13

right, and what did you get for the whole circle
A =12^2 x 3.14

Answer 14

452.16

Answer 15

ok, so when you subtract 452.16 - 254.34, that should be the area of the black ring

Answer 16

197.9 !! ty!

Answer 17

correct
yw :)