Question 773717: A wheel makes 4000 revolutions in moving a distance of 44 kms. Find the radius of the wheel?
(a)69 mtr
(b) 57 mtr
(c) 77 mtr
(d) 1.75 mtr Answer by 303795(602) (Show Source):
You can put this solution on YOUR website! If the wheel makes 4000 revolutions in travelling 44000 metres (44 kilometres) then one revolution must be 44000/4000 = 11 metres so the circumference of the wheel will have to be 11 metres as well.
Using the formula for circumference of C = 2 x Pi x r
11 = 2 x Pi x r
so r = 11/(2 x Pi)
=1.75 metres
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