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Member warned that the homework template must be used.

**Known data:**

In the picture, CD = 10 cm. What is the area of shaded area?

**Equation:**

I know,

Area of a circle = ##πr^2##

Diameter of a circle = ##2πr##

**Attempt:**

Here, ## r = 10/2 = 5 ##

So, diameter ## = 2πr = 2*3.1416*5 = 31.42 cm ##

And area of the circle ## = πr^2 = 3.1416*5^2 = 78.54 cm^2 ##

But I don't know how to find out the area of sheded section.

Please help me.

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