Question

The diameter of the wheel of a car is 77 centimetre how many revolutions will it make to travel 121 kilometre

Answer 1

The wheel of the car made 50,000 revolutions.

Step-by-step explanation:

The diametric of the wheel is, d = 77 cm = 0.77 m.

The distance traveled is, X = 121 km = 121000 m.

Compute the circumference of the wheel as follows:

$C=2\pi r=\pi\times d=\frac{22}{7}\times 0.77=2.42$

Compute the number of number of revolutions as follows:

$n=\frac{X}{C}=\frac{121000}{2.42}=50000$

Thus, the wheel of the car made 50,000 revolutions.

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