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Delhi Police Constable Exam Model Paper 10
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© examsnet.com
Question : 87
Total: 100
If the radius of a circle is increased by 16%, its area increases by
34.56 percent
32 percent
16 percent
17.28 percent
Validate
Solution:
Tips & Tricks
Area of circle =
π
r
2
, where r is the radius of circle.
When r is increase by 16% then new area =
π
×
(
1.16
r
)
2
=
1.3456
π
r
2
% increase in area
=
[
(
1.3456
–
1
)
1
]
×
100
=
34.56
© examsnet.com
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