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प्रश्न
The diameter of every wheel of a car is 63 cm. How much distance will the car move during the 2000 revolutions of its wheel.
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उत्तर
Diameter of car wheel (d) = 63 cm
∴ Circumference = πd = `22/7xx63` = 198 cm
Distance covered in 2000 revolutions
= 2000 × 198 cm
= `(2000xx198)/100` = 3960 m = 3.96 km
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