Question

I want the answer for this question by only those who wrote cbse class 10 maths board exam today.

Answer 1

area of semi circle with radius 4.5
=πr^2/2=π *4.5*4.5/2=10.125*π
area of two semi circle with radius 1.5
=π *1.5*1.5=2.25*π
area of circle with radius 2.25
=π *2.25*2.25 =5.0625*π
area of outer hemisphere with radius 1.5
=π *1.5*1.5=2.25*π
area of shaded region in hemisphere 4.5
=10.125*π-(2.25π+5.0625π)=2.8125*π
Total shaded region=
2.8125π+2.25π
=5.0625π=15.91

Answer 2

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