Mathematics
A tank 30 m long, 24 m wide and 4.5 m deep is to be made. It is open from the top. Find the cost of iron sheet required, at the rate of ₹ 65 per m2, to make the tank.
Answer
Given:
Length of the tank = 30 m
Breadth of the tank = 24 m
Height of the tank = 4.5 m
Area of 4 sides = 2(l + b)h
= 2(30 + 24)4.5 m2
= 2 x 54 x 4.5 m2
= 486 m2
Area of floor = l x b
= 30 x 24 m2
= 720 m2
Total area = 486 m2 + 720 m2
= 1,206 m2
Rate of sheet required = ₹ 65 per m2
= ₹ 65 x 1206
= ₹ 78,390
Hence, the total cost of iron sheet required to make tank is ₹ 78,390.
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