36 should be added to both sides because 12/2= 6 then you square 6 to get 36 and that should be it.
256.5/18= 14.25
(14.25x2)+(18x2)= 64.5m
for the triangle...
b=2h
a=(1\2).bh=648
(1/2).2h.h=648
h2=648
h-18|2 in
h=36|2 in
for the rectangle...
L=3+w
a=l+w=648
{3+w}w=648
w2+3w-648=0
Only positive W values make sense here..
w-24=0
w=24 in
So..
L=3+24
Answer:
I hope I know but I need help my self
