Answer:
The area of this shape equals 
Step-by-step explanation:
From the diagram, we can see that this shape is a parallelogram (since opposite sides are equal to each other). The formula for the area of the parallerlogram is as follows:
(where "b" is the base, and "h" is the height).
And so we get...

Answer:
0
Step-by-step explanation:
=-5/6-7/6+2
=-12/6+2
=-2+2=0
All of them but A because hexagon as no acute angel
0 if you add the thickness to the underside of the tank