Question

BRAINLIST QUESTIONS

Answer 1

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Your answers are in the attachment...

Answer 2

In fig.1

Area of shahed portion ,

=Area of rectangle - Area of semi circle

=L×B - (πr^2)/2

=14×10 - (3.14×7^2)/2

=140-153.86/2

=140 - 76.93

= 63.07cm^2

In fig.2

Area of shaded portion,

=Area of ring

=π(R^2 - r^2)

=3.14(25-16)

=3.14×9

=28.26cm^2

In fig.3

Area of shaded portion,

=Area of square - Area of circle

=side^2 - πr^2

=5^2 - 3.14×(2.5)^2

=25 - 19.63

=5.37cm^2