The diagram below shows a semicircle with centre O. Taking n = 3.14, find 27.
the shaded area.
O

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11.12 cm^2.

Step-by-step explanation:

The area of the shaded part = Area of the semicircle - area of the triangle.

The base of the triangle has length 8 - 1 = 7 cm and it's height is equal to the radius of the semicircle which is 4 cm.

So our shaded area = 1/2 * 3.14 * 4^2 - 1/2 * 7 * 4

= 25.12 -  14

= 11.12 cm^2.

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step-by-step explanation:

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