Question 958122
How many revolution per second will an automobile wheel make at the rate of 63.4km per hour if the diameter is 5.4dm??p
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{{{63.4 (km/hr)*(rev/5.4(pi)dm)*(10dm/m)*1000(m/km)*(hr/60 s)=63.4*10*1000/(5.4*60)=1957(rev/s)}}}


notes:
circumference=π*diameter=π*5.4 dm
dm=decimeter
meter=10 decimeters
kilometer=1000 meters