73) Find the surface area. Don't forget your
label.
8 cm
10 cm
18 cm
8 cm

Answer:
512cm²
Step-by-step explanation:
1/2bh*2 = 1/2(4)(10)(2)=40
Each triangle is 40
18*8=144
Each rectangle is 144
144+144+144+40+40=512cm²