Two cubes each of 12 cm edge are joined end to end. Find the surface area of the resulting cuboid.

Solution

Let l, b and h are respectively the length, breadth and height of the cuboid, then
l = (12 + 12) cm = 24 cm
when two cubes are joined we get a cuboid b = 12 cm and h = 12 cm.
Now,
The Surface Area of the resulting cuboid
= 2 (lb + bh + hl) cm²= 2 (24 x 12 + 12 x 12 + 24 x 12) cm²= 2 (288 + 144 + 288) cm²= 2 (720) cm²= 1440 cm².
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Two cubes each of 12 cm edge are joined end to end. Find the surface area of the resulting cuboid.

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