Four cubes each of side 3 cm are joined end to end. Find the surface area of the resulting cuboid.
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Side of cube = 3 cm
If four cubes are joined end to end then it forms a cuboid.
Length of Cuboid = 3(4) = 12 cm
Width of Cuboid = 3 cm
Height of Cuboid = 3 cm
Surface Area of Cuboid = 2(lb+bh+hl)
Surface Area of Cuboid = 2[(12)(3) + (3)(3) + (3)(12)]
Surface Area of Cuboid = 2(36 + 9 + 36)
Surface Area of Cuboid = 2(81)
Surface Area of Cuboid = 162 sq.cm
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