Grass is to be laid in a rectangular plot 15 m long and 13 m wide leaving two triangular sections at opposite edges for two flower beds. If the flower beds are to be equal right-angle isosceles triangles with equal sides measuring 1.5 m each, find out how much would it cost to lay grass at Rs 8 per sq. m ?
(A) Rs 1542
(B) Rs 1462
(C) Rs 1264
(D) Rs 1642