Question

Find the exact area of the region bounded by two concentric circles with radii 10 inches and 6 inches.

i think its 64 pi
correct me if I'm wrong?

Answer 1

might need some context ....

Answer 2

concentric ... common centers, thats what i was missing

Answer 3

area big - area little

Answer 4

pi R^2 - pir^2 = pi(R^2-r^2)

Answer 5

so.. is my answer wrong or right?
and that the question i got.. im confuzed by it too

Answer 6

100 - 36 = 64 yes

so 64pi

Answer 7

64pi "in^2"

Answer 8

yay i got one right for once :D thank you!

Answer 9

youre welcome; i had to remember what concentric circles were .. but after that it was simple enough