A) 180 sq m
B) 200 sq m
C) 220 sq m
D) 240 sq m
Correct Answer: C
Solution :
The radius of roller is 0.35 m. The area covered in one revolution = Curved surface area of roller \[=2\times \frac{22}{7}\times 0.35\times 2=4.4\,\,\text{sq}\,\,\text{m}\] \[\therefore \] Total area covered in 50 revolutions \[=4.4\times 50=220\,\,\text{sq}\,\,\text{m}\]You need to login to perform this action.
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