a wheel has diameter 84 cm find how many complete revolution must it make to cover 3.168km
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38
So, diameter of wheel=84cm
circumference of wheel=πd
let the numbers of revolution take by wheel=n
According to the question,
n×π×d=316800(after converting in cm )
n×22/7×84=316800
n×22×12=316800
n×264=316800
n=316800/264
n=1200
so,The wheels 1200 revolution
circumference of wheel=πd
let the numbers of revolution take by wheel=n
According to the question,
n×π×d=316800(after converting in cm )
n×22/7×84=316800
n×22×12=316800
n×264=316800
n=316800/264
n=1200
so,The wheels 1200 revolution
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8
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