a wheel is of diameter 140 cm. find the number of revolutions it makes to cover a distance of 61.6 m.
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the radius of the wheel is 140/2cm=70cm
perimeter of the wheel is 2π70 cm=2*22/7*70 cm
=440 cm
for one revolution the wheel cover the distance 440 cm
so,the number of revolution to cover the distance 61.6m is
61.6 m÷440 cm
=6160cm/440cm
=616/44
=56/4
=14
number of revolution is 14
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