7. The diameter of the wheel of a car is 35 cm. How much distance will it cover in 1000
revolutions?
8. The radius of a wheel of a bus is 0.70 m. How many revolutions will it make in covering
22 km?
Answers
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Step-by-step explanation:
1. Diameter=35cm
Radius=35cm/2
distance car will cover in 1 revolution= the circumference of the wheel
Circumference=2×pi×r=2×22/7×35cm/2
=35×22cm/7= 110 cm
Distance travelled in 1000 revolutions=1.1 m×1000
=1.1km
2. Radius=0.7m
Distance=22km
No. of revolutions=Distance/Circumference of circle
=22km/2×pi×r=22km/2×22/7×0.7
=22000/22/7×1.4
=22000×7/22×1.4
=1000*5
=5000
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