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Find the number of revolutions made …

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Find the number of revolutions made by a circular wheel of area 6:16m square in rolling a distance of 572 m.

Posted by Uma Yadav 4 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 4 years, 11 months ago

Area = 6.16 m^2
x r^2 = 6.16
r^2 = 616 / 100 x 7 / 22
r^2 = 196 / 100
r = 14 / 10
r = 1.4 m

Circumference = 2 x x r
= 2 x 22/7 x 1.4
= 8.8 m

Distance = 572 m

Number of revolutions = Distance / Circumference
made by the wheel = 572 / 8.8
= 65

Therefore, the wheel makes 65 revolutions to cover 572 meter.

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