Qus. 13: A water tank is 5m long , 4m wide and 2m deep . Determine the cost of iron sheet required to make the tank at the rate of Rs. 60 per meter if the sheet is 2m wide. ans is 2280
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Answer:
surface area of cuboid = 2 [ lb + bh + lh ]
2[ 5*4 + 4*2 + 5*2 ]
2 [ 20 +8 +10]
2*38
76
sheet is two meter wide therefore = 76/2 = 38
cost = 60 per meter
therefore cost = 60*38
= 2280 :)
Step-by-step explanation:
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