Question

Two circles share the same center. The radius of the larger circle is “r” and the radius of
the smaller circle is 5 units less than the radius of the larger circle. How can I find the area of the non-overlapping space?
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I am not sure of what the equation I would use is.

Answer 1

\[\pi r^2\] for the big one
\[\pi(r-5)^2\] for the small and therefore
\[\pi r^2-\pi(r-5)^2\] for the non overlap

Answer 2

ok, thank you!