Question

what is the surface area?

Answer 1

\[SA = 2(lw+wh+lh)\]

Answer 2

Surface area is just like if this box was made out of cardboard and you unfolded it and laid it flat. Then you find the area of the cardboard.

So you just look at one face of it at a time, find the areas, and add them up. It's helpful if you count them first, for this there are 6.

Answer 3

4(19*8) + 2(8 * 8) = 736

Answer 4

w = 8, l = 8, h = 19