A car makes 50,000 revolution to travel a distance of 121km.The diameter of the wheel of the car is????
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Revolution=50000 D=121km=12100000cm In 1 revolution distance= 12100000/50000=242 cm Therefore Circumference of wheel= 2pi r 2*22/7*r= 242 r= 242*7/2*22 r=77/2 cm D= 2r = 2*77/2 =77cm
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