16. Surface Area and Volume

1. The inner length, breadth - and height of a cuboidal tank is 3m, 3.5 m and 2 m respectively. The tank requires to be coated internally. Then the expenses of coating them at the rate Rs. 50 per sq.m = 

[Note : The upper surface does not want to be coated]

2. The cuboid shaped tank has the length 2.2 m, breadth 1.5 m and height 1.8 m then the capacity of that tank = 

3. The capicity of the container is 44. 72 cubic m. If the length of the container is 4.3 m and breadth is 2.6 m then its height is ..... cm