Question

Circumference of the circle A is 24 pi and circumference of the circle B 12pi is . Which the difference between the areas of A and B?

Answer 1

whats the formula for area?

2 times pi times R?

Answer 2

144pi - 36 pi = 108 pi

Answer 3

C = 2 pi r
A = pi r^2

Answer 4

wait a sec..... how did you get the radius

Answer 5

12pi = 2 pi r

divide both sides by pi:

12 = 2r
12/2 = r
6 = r

Answer 6

oh i see now thanks