I’m not insert under damaging
The formula for area of a triangle is base x height x 1/2
340.8 cm^2.
72+72+72+62.4+62.4=340.8cm^2.
X-2y = 3
-2y=3-x move the x over to the other side
-y=3/2 -1/2x divide both sides by 2
y=1/2x - 3/2 divide both sides by -1
30 is the answer and what your name