Respuesta :

Step-by-step explanation:

2*a*b + 2*a*c + 2*b*c = 2*8*2 +2*8*7 + 2*2*7 = 32 + 112 + 28 = 172 ft²

Jas11M

Answer:

172 ft2

Step-by-step explanation:

bxhxw= surface area

8x2x7=172

unit--> ft2