Question

The diameter of a wheel is 28 cm .the num of revolution will it make in moving 11km is ?


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Answer 1

Answer:

Diameter of wheel = 28 cmRadius of wheel = \frac{28}{2}= 14 cm 228 =14cmCircumference of wheel = 2 \pi r = 2 \times \frac{22}{7} \times 14 = 88 cm2πr=2× 722 ×14=88cmNo. of revolutions in 88 cm(0.00088km)= 1No. of revolutions in 11 km = \frac{11}{0.00088}=12500 0.0008811 =12500Hence No. of revolutions in 11 km is 12500

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