Question

what is the formula of 4 walls of the cuboid room. when the dimensions are 12×8×4

Answer 1

four wall area of cuboid = 2h (l+b)
and
area = 2x 12 (8+4)
= 24x 12
= 288 unit square.

Answer 2

The formula of 4 walls is 2h(l+b)

the length is 12
the breadth is 8
the height is 4

so in this case it will be
2*4(12+8)
=2*4(20)
=8(20)
=160
Therefore 160 is the final ans.