An iron tank 20 m long, 10 m wide and 8 m deep is to be made from iron sheet 4 m wide. If the tank is open from the top, find the cost of the iron sheet at the rate of 75 per m.
Answers
Given that length of the open iron tank = 20 m.
Breadth of the closed iron tank = 10 m
The height of the closed iron tank = 8 m.
Surface Area of the tank = 2[ bh + hl]
= 2[10×8+8×20] = 2×240=480m^2
Area of the rectangular iron sheet = 480m^2
so that length × breadth = 480m^2
But breadth of sheet = 4 m (given)
∴ length = 480 / 4 = 120 m .
Given that cost of iron, the sheet used at the rate of Rs 5 per metre.
The total cost of the sheet = Rs. (120 × 5) = Rs. 600.
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Answer:
Cost of iron sheet = Rs. 9000
Step-by-step explanation:
Given that length of the open iron tank = 20 m.
Breadth of the closed iron tank = 10 m
The height of the closed iron tank = 8 m.
Surface Area of the tank = 2[ bh + hl]
= 2[10×8+8×20] = 2×240=480m^2
Area of the rectangular iron sheet = 480m^2
so that length × breadth = 480m^2
But breadth of sheet = 4 m (given)
∴ length = 480 / 4 = 120 m .
Given that cost of iron, the sheet used at the rate of Rs 75 per metre.
The total cost of the sheet = Rs. (120 × 75) = Rs. 9000.