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Byju's Answer
Standard VII
Mathematics
Area of a Circle
A square is i...
Question
A square is inscribed in a circle. If the area of the shaded region is
224
c
m
2
, calculate the radius.
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Solution
Let the radius of the circle be
r
Area of shaded region = Area of circle - Area of square
Area of the circle
=
π
r
2
length of diagonal of square
=
2
r
side of square
=
√
2
r
area of square
=
2
r
2
π
r
2
−
2
r
2
=
224
(
22
7
−
2
)
r
2
=
224
8
7
r
2
=
224
r
2
=
196
r
=
14
c
m
The radius of circle is
14
c
m
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