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The diameter of a wheel of a car is 63 cm. Find the distance travelled by the car during the period, the wheel makes 1000 revolutions.

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1.28 km

1.98 km

1.58 km

1.68 km

answer is B.

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Detailed Solution

Given the diameter of a wheel of a car is 63 cm.
The circumference of wheel is,

C = π d

Substituting the diameter in above formula,

⇒ C = 227 × 63

⇒ C = 22 × 9

Distance covered is,
Question Image

As we know that,
1 km = 1000 m
1 m = 100 cm
1 km = 100000 cm
Therefore, 198000 cm = 1.98 km.
Hence, the total distance covered is 1.98 km.
Hence, option 2 is correct.

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