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10 December, 18:44

Three cubes each of side 4 cm are joined end - to-end. Find the surface area of the resulting cuboid.

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  1. 10 December, 19:36
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    Three cubes are joined end-to-end. It becomes a cuboid of length (l) = 4 + 4 + 4 = 12 cm, breadth (b) = 4 cm and height (h) = 4 cm

    Therefore, surface area of cuboid = (lb + bh + lh)

    = 2 (12*4 + 4 * 4 + 12 * 4)

    =2 (48 + 16 + 48) = 2 (112) = 224 cm²
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