A) Rs. 8410
B) Rs. 7140
C) Rs. 8140
D) Rs. 7410
Correct Answer: C
Solution :
(c): Area of circular path = Area of ring. Area of path \[=\pi \left( {{R}^{2}}-{{r}^{2}} \right)\] Total cost \[=\text{Area}\times \text{cost}/{{m}^{2}}\]You need to login to perform this action.
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