If the wheel of the bus with 90 cm diameter makes 210 revolutions per minute. Find the speed of bus in km/hr.
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Answer:
35.595
Step-by-step explanation:
Diameter of wheel = 90cm.
Radius of the wheel = 22/7 * 90 = 282.5 cm
Each time, the wheel makes a revolution, it cover 282.5cm.
Revolutions in one minute = 210
Distance covered in 1 minute = 59,325 cm or 593.25 m
Distance covered in 60 minutes = 35595 m [593.25*6]
Speed of bus = 35.595 km/hr
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