SOLVE PLEASE: The radius of a circular track is 210 meter. find the number of revolutions made by a man in 660 meter race?

Question

anonymous · Answer

ALSO GIVE FORMULA

anonymous · Answer

Circumference of circle = 2*pi*radius

anonymous · Answer

every  2*pi*radius  = 1 revolution

anonymous · Answer

Figured out the answer ?

anonymous · Answer

Answervis 2... but dnt know how it comes

anonymous · Answer

No, answer should be 1/2(half)

anonymous · Answer

sorry shabeer, ans = 2

anonymous · Answer

Circumference = 2*(22/7)*210
2*22*30=1320
660/1320=1/2

anonymous · Answer

Circumference = 2 * 3.14 * 210 = 1318.8m. In a 660 m race, there are 1318.8/660 rounds around the circular track.

anonymous · Answer

@ GT, we can take the value of pi to be 22/7, as there is 210, and 22/7 is more accurate than 3.14

anonymous · Answer

I agree. Exact value is less important than the arithmetic formulation involved.

anonymous · Answer

in book Ans is 2

anonymous · Answer

Then the question or answer must be wrong.

anonymous · Answer

Either the answer in the book is wrong or the problem formulation in the book is wrong.