The total surface area of a cube is 864 cm². Find its
volume and LSA .
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Answer:
Total surface area of cube = 6a²
Given total surface area = 864 cm²
=> 6a² = 864
=> a² = 144
=> a = √144
=> a = 12
Hence, the side of the cube is 12 cm.
Volume = a³ = (12)³ = 1728 cm³
L.S.A. = 4a² = 4(12)² = 4(144) = 576 cm²
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