*not* dependent on the height:

(3) and (4) each have an “h” and an “h” appears twice in the long formula for A: A = 2lw + 2 hw + 2lh. Look for the one with no “h” at all.

*not* dependent on the height:

(3) and (4) each have an “h” and an “h” appears twice in the long formula for A: A = 2lw + 2 hw + 2lh. Look for the one with no “h” at all.