how many times will a diameter of a 75cm wheel rotate if a girl rides the bicycle for 1km
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Step-by-step explanation:
Distance covered in one rotation = 2πr (Circumference of the circle)
= 2 × 22/7 × 75/2 = 235.71 cm
1km = 100000cm
100000cm/235.71cm = 424.25 cm ~ 425 rotation
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