the diameter of a circle wheel is 21 cm how many revolutions within make it travel 198 km
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Answer:
Step-by-step explanation:
Radius= 21/2cm.
Circumference of circle= 2πr.
2*22/7*21/2cm.
=66cm.
no.of revolution
=198000/66.
=3000
Answered by
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Given: d=21cm
so, r=21/2
circumference of circle =2πr
=2*22/7*21/2
=66cm sq.
revolution takes = distance/circumference of circle
distance=198*100000cm
=19800000
revolution takes=19800000/66
=3000(approx)
so, r=21/2
circumference of circle =2πr
=2*22/7*21/2
=66cm sq.
revolution takes = distance/circumference of circle
distance=198*100000cm
=19800000
revolution takes=19800000/66
=3000(approx)
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