Question

I need to know the area of the shape base 1 (27ft) base 2(34ft) Height (12ft)

Answer 1

Perhaps you've seen the formula
.. A = (1/2)*(b₁ +b₂)h

Use it.
.. A = (1/2)*(27 ft +34 ft)*(12 ft)
.. = (1/2)*(61 ft)*(12 ft)
.. = (30.5 ft)*(12 ft)
.. = 366 ft²