Two cubes of side 4 cm are fixed together. find the total surface area of the new solid formed.
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Length of new cuboid =4+4=8cm Breadth of new cuboid =4cm Height of new cuboid =4cm T.S.A=2(lb+bh+hl) =2(8*4+4*4+4*8) =2(32+16+32) =2*80 =160cm^2. Answer
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