A tank 12m long 8m wide and 5m deep is to
be made. It is open at the top ,Determine
the cost of iron sheet at the rate of rs.3050
per meter ,If the sheet is 4metre wide..
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Answer:
Area of sheet = Surface area of the tank
Surface area of the tank = Area of 4 walls of the tank + Area of its base
A=20×8+8×12+20×8+8×12+20×2
A=160+96+160+96+240
A=752m
2
Area of sheet = Surface area of the tank
L×2.5=752
L=300.8 m
Length of the sheet =300.8 m
∴ cost of the sheet =C=300.8×12.50
C=3760
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