10. The diagram below shows a square, a semicircle and a right-angled isosceles triangle. Given that the radius of the circle is 4 cm, find the area of the shaded part. Take π as 3.14. [3]
4 x 4 = 16
1/4 x 3.14 x 4 x 4 = 12.56
16 – 12.56 = 3.44
4 x 2 = 8
1/2 x 8 x 8 = 32
32 + 3.44 = 35.44 cm2
The area of the shaded part is 35.44 cm2.
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