Question

the diameter of a bicycle wheel is 28 cm. what distance will it cover in 100 revolutions ?

Answer 1

if diameter is 28cm then redious is 28/2 = 14 cm then the distance which was covered by wheel in 1 revolution is 2πr= 2×22/7×14=128cm so the distance in 100 revolution is 100×128=12800cm or 128m