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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Amaya 1 month 2021-08-17T06:35:04+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-08-17T06:36:37+00:00

    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

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