Question

3. A rectangular water tank is open at the top. Its capacity is 24 m? Its length and
breadth are 4 m and 3 m respectively. Ignoring the thickness of the material used
for building the tank, the total cost of painting the inner and outer surfaces of the
tank at Rs 10 per m
M.B.A. 2006)​

Answer 1

Answer:

depth of the tank (24/4*3)

=2 m

since the tank is opened and the thickness of the material is ignored , we have

sum of inner and outer surface

2[{2(l+b)*h}+lb]

2[{2(4+3)*2}+4*3] m

80 m^2

cost of painting Rs. (80*10)

=Rs. 800