12. A tank 20 m long, 12 m wide and 8 m deep
is to be made of iron sheet. It is open at the
top. Determine the cost of iron-sheet, at
the rate of * 12.50 per metre, if the sheet is
2.5 m wide.
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Answer:
total area of iron sheet=2lw+2lh+2wh
Step-by-step explanation:
2(20×12)+2(20×8)+2(12×8)
480+320+192
992m²
width of sheet=2•5
length of sheet=992/2•5
396•8m
cost of sheet=396•8×12•50
₹4960
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