Question

A car makes 50,000 revolutions to travel a distance of 121 km. The diameter
of the wheel of the car is?​

Answer 1

Given: Total no. of revolutions = 50000

           Distance travelled = 121 km = 121000 m

Distance travelled in one revolution, i.e., circumference = $\pi d$ = $\frac{121000}{50000}$ = 2.42 m

Therefore 'd' = 2.42 * $\frac{7}{22}$ = 0.77 m

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