1.

A circular garden of radius 15 m is surrounded by a circular path of width 7 m. If the path is to be covered with tiles at a rate of Rs. 10 per `m^(2)`, then find the total cost of the work. (in Rs.)A. 8410B. 7140C. 8140D. 7410

Answer» Correct Answer - C
(i) Area of circular path = Area of ring.
(ii) Area fo path = `pi(R^(2)-r^(2))`.
(iii) Total cost = Area `xx` cost/`m^(2)`.


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