A) 10 min
B) 20 min
C) 30 min
D) 40 min
Correct Answer: B
Solution :
Diameter of the wheel = 3 m |
\[\therefore \]Circumference \[=\pi \times \] diameter \[=\frac{22}{7}\times 3=\frac{66}{7}\,\,\text{m}\] |
Since, a wheel covers a distance equal to circumference in one revolution, therefore, distance covered in |
28 revolutions \[=28\times \frac{66}{7}=264\,\,\text{m}\] |
Now, 264 m distance is covered in 1 min |
\[\therefore \] 5280 m distance will be covered in \[=\frac{5280}{264}\] |
= 20 min |
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