Question

Four walls are cube or cuboid

Answer 1

if they are of same length it will be cube
if they are of different lengths it will be cuboid

Answer 2

Both cube and cuboid has 4 walls.

But formula of their area is different.

Area of 4 walls of cube = 4a^2

Area of 4 walls of cuboid = 2(bh+hl)

Hope you understand.
If you satisfied mark it brainliest.