Question

surface area of a cube is 384 cm square find its side

Answer 1

Sol'n: A/Q, Surface area of cube = 384 cm²
=> 6a² = 384
=> a² = 384/6
=> a² = 64
=> a = √64
=> a = 8
.°. The side of the cube is 8cm.

Hope it'll help..:)

Answer 2

area of one face of cube = 384/6 = 64 sq.cm
area of sq. = side ×side
64 = side sq.
$\sqrt{64} = {side}^{2} \\ {8}^{2} = {side}^{2} \\ 8 = side$
therefore length of side is 8cm