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Radius of the wheel =r= 60/2
=30 cm
Circumference of the wheel =2πr=2×22/7×30= 1320/7cm
Distance covered in 1 revolution = 1320/7cm
Distance covered in 140 revolutions = 1320/7×140=26400 cm=264 m
=264/1000km
Distance covered in 140 revolutions = 264/1000km
Distance covered in 1 hour = 264/1000×60
= 15.84km/hr
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