the diameter of we'll pass is 90 centimetre which make 3 315 relovation 1 minute determine its speed is in kilometre per hour
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Diameter = 90 cm ⟹ r = 45 cm
circumference = 2×227×45 = 282.85
Distance covered in one revolution = 282.85 cm
∴Distance covered in 315 revolution=282.85×315=89097.75cm=89097.75100000=0.89097km
distance in 1 minute = 0.89097 km
distance in 60 minutes pr 1 hr
= 0.89097 * 60
= 53.4Km/hr
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