5 cubes each of edge 12 cm are joined end to end. find the surface area of the resulting cuboid
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length = 12+5 = 17cm
height = 12cm
breadth = 5cm
Total surface area of new cuboid formed
=2(lb+bh+hl)
=2(17*5+5*12+12*17)
=2(85+60+204)
=2(943)
=2*943
=1886
Hence, total surface area of new cuboid formed =
1886cm sq.
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