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May someone please help me with this?

May someone please help me with this?-example-1
User Ibram Reda
by
6.5k points

1 Answer

5 votes

Answer:

Explanation:

First, calculate the angle of FDE (assume it as α) by:


EF=(\alpha)/(360)*(2\pi)(DE) \rightarrow 2\pi = (\alpha)/(360)(2\pi)(6)


\alpha=60^(0)

So, use this angle to calculate the area of FDE (unshaded region):


A_(US)=(\alpha)/(360)*(\pi)(DE)^(2)=(60)/(360)(\pi)(6^(2))=6\pi

So, the shaded region can be determined by:


A_(S)=A-A_(US)=\pi(DE)^(2)-6\pi=36\pi-6\pi=30\pi=(60)/(2)\pi

User Dlavila
by
6.9k points
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