How do you find the surface area of a rectangular pyramid?

Answer 1

the area of the base is easy w*L

if the height is h
then two of the slope triangles have base w and height along the slope of
sqrt(h^2 + L^2/4)
so the sum of those two triangle areas is
w *sqrt(h^2 + L^2/4)
similarly the sum of the other two triangle areas is
L * sqrt (h^2 + w^2/4)

Answer 2

you suck