The floor of a building consists of 3000 tiles which are rhombus shaped and each of its diagonals are 45cm and 30cm in length. Find the total cost of polishing the floor, if the cost per sq. metre is Rs 4.
Solution:
Area of each tile = 1/2 × 45 × 30 = 675 sq. cm Area of 3000 tiles = 675 × 3000 = 202500 sq. cm Converting to square meters: 202500 sq. cm = 202.5 sq. m Total cost = Rs(202.5 × 4) = Rs 810