Answer:
706.4ft²
Step-by-step explanation:
This is a prism with a trapezoid base. The total area includes:
1) 2 trapezoids (bases):
A1=2×(19+5)×12.1/2=24×12.1=290.4ft²
2) side area:
A2=base perimeter×prism height=
(19+5+14+14)×8=(24+28)×8=52×8=416ft²
So total area is A1+A2
A=290.4+416=706.4ft²
