Answer:
SA=136
Step-by-step explanation:
6*2=12
12*2=24
7*2=14
14*2=28
6*7=42
42*2=84
84+28+24
136
A rectangular prism has six sides so the area is the sum of the side areas.
A=2(xy+xz+yz) where x,y,z are the dimensions, in this case
A=2(2(6)+2(7)+6(7))
A=2(12+14+42)
A=2(68)
A=136 ft^3
