Question

In moving a distance of 440 m, a cycle wheel makes 1000
revolutions. Find the diameter of the wheel.
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Answer 1

Given :-    Distance travelled = 440 m Number of revolutions = 1000      To find :-   The diameter of the wheel      Proof :-    Now, we know that   ${Number\:of\:revolutions\:=\:\dfrac{Distance}{Circumference}}$   -» 1000 = ${\dfrac{440}{2pi r}$  -» 1000 = ${\dfrac{220}{pi r}$  -» ∏ r = 0.22  -» r = 0.7 m  -» r = 70 cm  -» Diameter = 140 cm