A) 200
B) 300
C) 400
D) 800
Correct Answer: B
Solution :
\[R=\frac{84}{2}=42\,\,cm\] \[\therefore \] Revolution \[\text{=}\frac{\text{distance}}{\text{circumference}}\text{=}\frac{\text{792 }\!\!\times\!\!\text{ 100}}{\text{2 }\!\!\times\!\!\text{ }\frac{\text{22}}{\text{7}}\text{ }\!\!\times\!\!\text{ 42}}\text{=300}\]
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