an iron tank 20 metre long,10 metre wide and 8 metre deep is to be made from iron sheet 4 metre wode. if the rnak is open from the top , find rhe cost of the iron sheet at the rate of rupee 5 per square metre
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area of iron required = TSA - area of top
= 2(lb+bh+hl) - lb
= 2(20*10+10*8+8*20) - 20*10
= 2(200+80+160)-200
= 2*440-200
= 880-200 = 680m²
length of iron sheet required = 680/4 = 170m
cost of iron required = 5 * 170 = ₹850
= 2(lb+bh+hl) - lb
= 2(20*10+10*8+8*20) - 20*10
= 2(200+80+160)-200
= 2*440-200
= 880-200 = 680m²
length of iron sheet required = 680/4 = 170m
cost of iron required = 5 * 170 = ₹850
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