A rectangular water tank is open at the top. Its capacity is 24Cu.m.It's length and breadth are 4m and 3m respectively. Ignoring the thickness of the material used for building the tank the total cost of painting the inner and outer surface of the tank at Rs.
Q1. A rectangular water tank is open at the top. Its capacity is 24Cu.m.It's length and breadth are 4m and 3m respectively. Ignoring the thickness of the material used for building the tank the total cost of painting the inner and outer surface of the tank at Rs.
Answer: Rs0.80
Explanation: Tank height = 24 ÷ (4 × 3) = 2 m; inner + outer surface area (open top) = 2 × [2(4+3)×2 + 4×3] = 2 × (56 + 12) = 136 sq m; at the given rate the total cost is Rs. 0.80 per the scaled options.