A room is 15 feet long and 12 feet broad. A mat has to be placed on the floor of this room leaving 112 feet space from the walls. What will be the cost of the mat at the rate of Rs. 3.50 per square feet?
None of these
Area of the mat = [(15 -- 3) × (12 -- 3)] sq. ft. = 108 sq. ft.
∴Cost of the mat = Rs. (108 × 3.50) = Rs. 378