18. The diameter of the wheel of a cycle is 70 cm. How far will it go in 250 revolutions?
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Answer:
diameter of the circle = 70 cm
Circumference of the circle = πd = 22/7 × 70 = 220cm
Number of revolutions = 250
therefore,
the distance it will cover in 250 revolutions = 220×250
= 55000cm
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