If the radius of a wheel is 21 cm, then ...

If the radius of a wheel is 21 cm, then find how many times it should rotate to cover a distance of 264 m.
(A) The circumference of the wheel `=2pirxx2xx(22)/(7)xx21` (given r = 21 cm)
(C) `therefore` The circumference of the wheel = 132 cm
(C) `"Number of rotations"=(26400cm)/(132cm)=200`
(D) Number of rotatins
`=("Distance to be covered")/("Circumference of the wheel")`
(It is given that distance = 264 m and circumference = 132 cm)

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