Question

30. In the given figure, Is AO in diameter, then the area of shaded region is (Use = 3.14)
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Answer 1

Answer:

61 square units

Step-by-step explanation:

Clearly, triangle ABC is a right angled triangle.

The diameter of the semi-circle would be root of 16^2 + 12^2

=> 256 + 144

=> root 400  => 20 cm.

r = 10cm.

Area of the triangle = 1/2 x 16 x 12 = 8 x 12 = 96 sqr cm.

Area of semicircle = 3.14 x 100 /2 => 3.14 x 50 => 157 sqr.cm

Area of shaded region = 157 - 96 = 61 sqr. units

Hope it helps