Question

A bicycle wheel , diameter 56 cm, is making 45 revolutions in every 10 seconds. At what speed in kilometre per hour, is the bicycle traveling?

Answer 1

I hope this is the answer.

Answer 2

diameter d=56
r=56/2=28
perimeter =2πr=2*(22/7)*28
p=176
it makes 1 revolution in 176cm
according to the data
distance d=(176*45)/100 m
time t=10sec
speed s=d/t
s=(176*45)/100/10[18/5]km/hr
=28.512 kmph