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Need help badly

#15 Find the area of each sector.

Need help badly #15 Find the area of each sector.-example-1

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The highlighted sector is exactly 3/4 of the circle area, because
(3\pi)/(2) is 3/4 of
2\pi which is a complete rotation.

Since you are given the radius, you can compute the area as


A = \pi r^2 = 16\pi

So, 3/4 of this area would be
12\pi squared cm.

The remaining sector, of course, is
4\pi squared cm.

User Sachelle
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