An open water tank 12m long 9m wide and 4m deep is to be made. Determine the cost of iron sheet required at the rate of ₹25 per m, if the sheet is 1.5m wide.
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= 12m - 1.5m = 10.5m
b= 9m - 1.5m = 7.5m
h= 4m - 1.5m = 2.5m
CSA = 2 ( l+b) ×h + lb
= 2 × (10.5 + 7.5) ×2.5 + (10.5×2.5)
= 2 ×8 ×2.5 +26.25
= 66.25m2
rate = 66.25 ×25
=rs1,656.25
b= 9m - 1.5m = 7.5m
h= 4m - 1.5m = 2.5m
CSA = 2 ( l+b) ×h + lb
= 2 × (10.5 + 7.5) ×2.5 + (10.5×2.5)
= 2 ×8 ×2.5 +26.25
= 66.25m2
rate = 66.25 ×25
=rs1,656.25
danoct2004:
i think this is the answer
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