Question

diameter of cyclr wheel 28 cm if 1.hour a cyclist completef 2500 revolution then find his speef in km / hour


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Answer 1

Step-by-step explanation:

Well first you'd need to calculate the circumference of the wheel. Using 2pi r.

Where r is the radius, which is half of the diameter.

All must be in metres. So half the diameter is 0.14m. So 2 x pi x 0. 14 = 0.879m. This is the measurement all the way round the wheel.

So this would tell you how far it would go in one revolution. Now you only need to divide the distance by the circumference of the wheel.

352m/0.879m =400.45 revolutions.