Home » A bicycle wheel of radius 42cm is rolled over a distance 66 meters. How many…

A bicycle wheel of radius 42cm is rolled over a distance 66 meters. How many…

A bicycle wheel of radius 42cm is rolled over a distance 66 meters. How many revolutions does it make?[Take (pi = frac{22}{7})]
  • A.
    2.5
  • B.
    5
  • C.
    25
  • D.
    50
Correct Answer: Option C
Explanation

circumference of the bicycle wheel
(= 2pi r = 2 times frac{22}{7} times 42 – 264cm = 2.64m\)
Number of revolution
(=frac{66}{2.64} = 25)

Related:  Factorize 2t2 + t - 15