If you are referring to the area of a trapezoid, since it is a 2-D figure and volume is for 3-D figures, the area trapezoid would be A=1/2h(b1+b2), where h is the height, b1 and b2 are the bases of the trapezoid. (order of the bases doesn't matter.)
If you are referring to the area of a trapezoid, since it is a 2-D figure and volume is for 3-D figures, the area trapezoid would be A=1/2h(b1+b2), where h is the height, b1 and b2 are the bases of the trapezoid. (order of the bases doesn't matter.)