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Question
Diameter of a wheel is
$3m$
The wheel revolves
$28$
times in a minute To cover the distance of
$5.280$
km the wheel will take
$(π=722 )$
A
$10$
minutes
B
$20$
minutes
C
$30$
minutes
D
$40$
minutes
Medium
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Solution
Verified by Toppr
Correct option is B)
Perimeter of the wheel
$=2πr=2×722 ×1.5m$
$=766 m$
Wheel covers a distance of
$766 ×28=264m$
in one minute
$∴$
it covers a distance of 5280 m in
$=2645280 =20$
Minutes
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