Question

EXERCISE 18.1
1. Find the area of the shaded region in the following.
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Answer 1

Answer:

1) 30.5$cm^{2}$

2) 34.24 $cm^{2}$

Step-by-step explanation:

1) Diameter = $\sqrt{6^{2} + 8^{2} } = 10$cm

so, radius, r = 5 cm

Thus area under shaded region =$\pi r^{2}$ - 6x8 =   78.5 - 48 = 30.5 $cm^{2}$

2) radius, r = 4cm

So, area under shaded region = $\pi r^{2}$ - 4x4 = 50.24 - 16 = 34.24 $cm^{2}$