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
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
circumference of the bicycle wheel
\(= 2\pi r = 2 \times \frac{22}{7} \times 42 = 264cm = 2.64m\\\)
Number of revolution
\(=\frac{66}{2.64} = 25\)
Source: WAEC / JAMB / NECO Classroom Archive (Record #26462)