a close iron tank 12 metre long 9 metre wide and 4 metre deep is to be made. determine the cost of iron sheet used at the rate of rupees 5 per metre,sheet being 2 metre wide
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Total surface are of tank = 2(lb + bh + hl ) = 2( 12*9+ 9*4 + 4*12)= 2( 108+36+48) = 192*2 = 384 m^2 = Length of sheet required = area/breadth = 384/2= 192 m Now cost of sheet = 192*5 = 960 rs
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