ok, so yo know what a net is? (not like fishing) like when you unfold the shape
ok so
the left side box surface area is
SA=2(LW+LH+WH)
SA=2(35*12.5+35*32.5+12.5*32.5)
SA=2(437.5+1137.5+406.25)
SA=2(1981.25)
SA=3962.5 cm^2
the right shape (triangular psism)
has 2 triangles and 3 rectangles
SA=2(1/2bh)+2(slantheight times side)+bh
SA=(23 times 20.5)+2(23.5 times 12.5)+(23 times 12.5)
SA=471.5+2(293.75)+287.5
SA=759+595.5
SA=1346.5
box=3962.5 cm^2
trianglar ting=1346.5 cm^2
how much more
box-triangle=3962.5-1346.5=2616 cm^2 more