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Byju's Answer
Standard VII
Mathematics
Area of a Circle
The differenc...
Question
The difference between circumference and diameter of a circle is
135
c
m
.
Find the radius of the circle.
[
Take
π
=
22
7
]
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Solution
Let the radius be
r
Circumference of circle is
2
π
r
Difference between circumference and diameter of a circle is
135
⟹
2
π
r
−
2
r
=
135
⟹
2
r
(
22
7
−
1
)
=
135
⟹
r
=
31.5
c
m
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