Find the number of revolutions a wheel will make to cover a distance of 66 m if the diameter of the wheel is 70 cm.
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Answer:
d= 70cm
r= 70/2 = 35cm
circumference is 2πr
hence circumference is 2*22/7*35 = 220cm
(note: value of π is 22/7)
number of revolutions = distance/circumference
revolutions = 66/220 = 66*100/220 = 30
(note: distance 66 is in metres. hence multiplied by 100 to convert it into cm)
the number of revolutions is 30.
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