16 = 0
17 = 1
18 = 10
19 = -4.1 ( -4)
20 = -5
I'm not sure if these are the answers but hope it helps some how!
Answer:
172 ft 2
Step-by-step explanation:
SA=2lw+2lh+2hw, for
A=2(lw + lh + hw)=2·(7 · 2+ 8 · 2 + 8 · 7)= 172 ft 2.
Hope this helps,
Best of Luck!