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Byju's Answer
Standard X
Mathematics
Area of a Segment of a Circle
In the given ...
Question
In the given figure
O
is the centre of the circle with radius
28
c
m
. Find the area of the minor segment
A
S
B
.
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Solution
Area of shaded region= ar. sector- area of
△
A
O
B
In
△
A
O
B
,
O
M
⊥
A
B
,
∴
∠
A
O
M
=
∠
M
O
B
=
22.5
°
&
A
M
=
M
B
=
1
2
A
B
Also,
△
A
O
B
=
2
×
a
r
△
A
O
M
Now,
cos
22.5
°
=
O
M
O
A
⇒
O
M
=
28
×
cos
22.5
°
=
25.90
㎝
A
M
=
O
A
sin
22.5
°
=
10.72
㎝
a
r
△
A
M
O
=
1
2
A
M
×
O
M
=
1
2
×
10.72
×
25.90
=
138.824
㎠
∴
a
r
△
A
O
B
=
2
×
138.824
=
277.144
㎠
Required area
=
45
°
360
°
×
22
7
×
28
×
28
−
277.144
=
308
−
277.144
=
30.35
㎠
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Q.
In Fig. 15.76, O is the centre of circle of radius 28 cm. Find the area of minor segment ASB.