Find the lateral surface area and the total surface area of a cube of side 8 cm.

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Solution

Side of the cube = 8 cm
Lateral surface area = $4 a^{2}$
$= 4 \times 8 \times 8 = 256 {cm}^{2}$

∴ Total surface area of the cube = $6 a^{2}$
$= 6 \times 8 \times 8 = 384 {cm}^{2}$

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