two cubes with 15 cm edge are joined end to end . find the surface area of the resulting cuboid
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length of the cuboid =15+15 =30 . breadth and height =15 . surface area of cuboid =2(lb +bh + HL). 2( 30×15+15×15+15×30) 2(450+225+450) =2(1125) =. 2250 m sq.
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