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=227)
10 minutes
20 minutes
30 minutes
40 minutes
A
10 minutes
B
40 minutes
C
20 minutes
D
30 minutes
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Solution
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Perimeter of the wheel =2πr=2×227×1.5m =667m
Wheel covers a distance of 667×28=264min one minute
∴ it covers a distance of 5280 m in=5280264=20 Minutes
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