Question

The total surface area of a cube is 864 cm². Find its

volume and LSA .​

Answer 1

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