## Calculate : (i) the area of the square ABCD (i) the area of the shaded region. (l 2. (a) Find the area of the shaded region i

Question

Calculate :

(i) the area of the square ABCD (i) the area of the shaded region.

(l

2. (a) Find the area of the shaded region if the radius of each circle is 4 cm.

D

С

4 cm

4 cm

4 cm

4 cm

А

B

2. (b) Find the area of the shaded region of radii of the two concentric circ

14 cm and 21 cm respectively and Z AOC = 30°.

A А

BI

30°

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Math
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2021-08-17T06:35:04+00:00
2021-08-17T06:35:04+00:00 1 Answer
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## Answers ( )

Answer:Area of square =Side

2

=8

2

=64 sq cm

Area of shaded portion = Double area of segment formed by diagonal of the square

Area of two quadrants =

2

1

πr

2

=

2

1

×3.14×8

2

=100.48 sq cm

Area of square – Area of two triangles formed by radii and the cord

So,

Area of shaded portion =100.48−64

=36.48sq cm