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Question
Diameter of a wheel is
3
m
The wheel revolves
2
8
times in a minute To cover the distance of
5
.
2
8
0
km the wheel will take
(
π
=
7
2
2
)
A
1
0
minutes
B
2
0
minutes
C
3
0
minutes
D
4
0
minutes
Medium
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Solution
Verified by Toppr
Correct option is B)
Perimeter of the wheel
=
2
π
r
=
2
×
7
2
2
×
1
.
5
m
=
7
6
6
m
Wheel covers a distance of
7
6
6
×
2
8
=
2
6
4
m
in one minute
∴
it covers a distance of 5280 m in
=
2
6
4
5
2
8
0
=
2
0
Minutes
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