a train wheel of diameter 49 cm travels a distance of 154 m. How many numbers of revolution does the wheel make?
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Answered by
15
Radius of wheel = diameter/2 = 49/2 cm
Circumference = 2πr = 2 × 22/7 × 49/2 = 154 cm
Distance = 154 m = 15400 cm
No. of revolutions = 15400 cm / 154 cm = 100.
Circumference = 2πr = 2 × 22/7 × 49/2 = 154 cm
Distance = 154 m = 15400 cm
No. of revolutions = 15400 cm / 154 cm = 100.
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Answered by
5
d=49cm
r=49/2 cm
distance travelled in one revolution=2πr
=2*(22/7)*(49/2)
=154cm
Total distance travelled=154m=15400cm
So. number of revolutions =15400/154
=100
so it takes 100 revolutions
r=49/2 cm
distance travelled in one revolution=2πr
=2*(22/7)*(49/2)
=154cm
Total distance travelled=154m=15400cm
So. number of revolutions =15400/154
=100
so it takes 100 revolutions
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