3 years ago

A circle with radius of 9 cm sits inside a circle with radius of 11

1 answer:

8 0

Ok so to answer this, we first need to figure out the area of both circles
we will use the formula A=πr²

so our two areas end up being 121π and 81π

now all we do is subtract the smaller from the larger

121π - 81π = 40π

shaded region = 40π

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