The length and breadth of a rectangular room are 18 ft and 13 ft respectively. The height of the room is 10 ft. If the cost of painting the four walls is Rs. 40 per square ft, what is the cost of painting the room?
Q1. The length and breadth of a rectangular room are 18 ft and 13 ft respectively. The height of the room is 10 ft. If the cost of painting the four walls is Rs. 40 per square ft, what is the cost of painting the room?
Answer: Rs. 24,800
Explanation: Area of four walls = 2×(18+13)×10 = 620 sq ft; cost at Rs. 40/sq ft = Rs. 24,800.