# The diameter of the wheel of a car is 70cm. How many revolutions will it make to travel 1.65km?

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by kakkar6644

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by kakkar6644

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C = Pi x D

C = 3.14 x 70cm

C = 220cm

Next convert 220cm to km = 220 / 100000 = 0.0022 km

1.65km / 0.0022km = 750 revolutions

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1.65 km = 1.65 ×1000×100 cm

= 165000 cm

now,radius = diameter/2

= 70/2

=35 cm

now, circumference = 2π r

= 2×(22/7)×35

= 220 cm

it means, 220 cm = 1 revolution

then, 165000 cm = 165000/220

=**750 revolution**

= 165000 cm

now,radius = diameter/2

= 70/2

=35 cm

now, circumference = 2π r

= 2×(22/7)×35

= 220 cm

it means, 220 cm = 1 revolution

then, 165000 cm = 165000/220

=