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UPSC CDS Math Area and Perimeter Questions
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© examsnet.com
Question : 56
Total: 116
An arc of a circle subtends an angle n at the centre. If the length of the arc is 22 cm, then what is the radius of the circle ?(Take π =
22
7
)
[2017 CDS-II]
5 cm
7 cm
9 cm
11 cm
Validate
Solution:
Radius of the circle
=
Length of the arc
Angle subtended by the arc at the centre
=
22
π
=
22
(
22
7
)
=
7
c
m
© examsnet.com
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