Answer:
See explanation.
Step-by-step explanation:
This problem doesn't really make sense, but I'll try my best.
a and b stand for the bases (they are parallel to each other).
I really don't know what a+b is supposed to mean. It's just the two bases added to each other. It doesn't mean anything.
h is the height of the trapezoid.
The formula for the area of a trapezoid is A = ((a+b)/2)h
