Trapezoidal Footing Volume Formula

Equation for calculate trapezoidal footing volume is,

V = h / 3(A1 + A2 + √(A1 * A2))

Where,
V = Volume of Trapezoid Footing
h = Height of Trapezoidal
A1 = Area of the Lower Shape
A2 = Area of the Upper Shape
A1 = m x n (Lower Height x Lower Breadth)
A2 = o x p (Upper Height x Upper Breadth)