The length, breadth, and height of a room are 10 m, 8 m, and 6 m respectively. Find the cost of whitewashing the walls of the room and the ceiling at the rate of Rs. 7.50 per m².
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Rs. 2220.
Length (l) = 10 m, Breadth (b) = 8 m, Height (h) = 6 m
Total Wall Area = 2 × (l + b) × h = 2 × (10 + 8) × 6 = 216 m2
Ceiling area = lb = 10 × 8 = 80 m2
Total cost for whitewashing the walls of the room and the ceiling = (216 + 80) × 7.50 = Rs 2220