Question

two cubes each of side 6 CM are joined face to face find the surface area of the cuboid
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Answer 1

Side of cube (a) = 6cm

When 2 cubes are joined side to side then,

length of cuboid formed (l) = 2 * a = 12 cm

height (h) = 6cm

breadth (b) = 6cm

So surface area of cuboid = 2 * {(l * b) + (b * h) + (h * l)}

= 2 * {(12 * 6) + (6 * 6) + (6 * 12)}

= 2 * {72 + 36 + 72}

= 2 * (180)

Therefore, surface area of cuboid = 360cm²

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Answer 2

area of cuboid =2(l×b+b×h+h×l)

=2(6×6+6×12+12×6)

=2(36+72+72)

=2×180

=360sqcm

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