A) 140
B) 150
C) 160
D) 166
Correct Answer: A
Solution :
Distance covered in 1 revolution = Circumference of wheel \[=2\pi r=1\times \frac{22}{7}\times 20\,cm\] Total distance \[=176\,m\] \[=17600\,cm\] \[\therefore \] Number of revolutions \[=\frac{17600}{2\times \frac{22}{7}\times 20}\] \[=\frac{17600\times 7}{2\times 22\times 20}=140\]You need to login to perform this action.
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