A car has a tyre of diameter 28 cm. ___ km is covered by the car if the tyre rotates 150 times. (Use $π$ = 22/7)

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Solution

Circumference of tyre = 2 $π$ r= Distance travelled in each rotation

Distance covered in 1 rotation = 88 cm

Distance covered in 150 rotation = 88 $\times$ 150 = 13200 cm = 0.132 km

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