Question
A cuboid is formed by combining two identical cubes. If
the surface area of each cube is 600 cm², find the total surface area of the resulting cuboid.Solution
Each cube has surface area = 600 cm², so two cubes = 1200 cm² When joined face-to-face, one face from each cube (total 2 faces) gets hidden Each face = 10×10=100 cm², So, hidden area = 200 cm² Total visible surface area = 1200 − 200 = 1000 cm²
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