the diameter of a cycle wheel is 21 cm how many revolutions will it make in moving 1.32 km
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Answers
Answered by
20
Answer:
Diameter = 21cm
Radius(r) = 21/2
Circumference of tyre (i.e of circle) = 2.pi. r
= 2.22/7.21/2
= 66cm.
1.32km = 132000cm
No. Of revolvtions = 132000cm/66cm = 2000
Answered by
2
Answer:
Diameter is 21 cm so
Radius=r/2, which is 21/2
Distance 1.32 km
IN CM IT IS 1.32*10^5 Which is nothing but 132000
Now the formula is
No.Of.Revolutions=Distance/Circumference
132000/2*22/7*21/2 which is nothing but 66
So the answer is 66 revolution
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