h/3 * ( A1 + A2 + √ (A1 x A2 ))A1 (Bottom area of Trapezoidal) = Length A * Breadth BA2 (Top area of Trapezoidal) = Length a * Breadth bh Height of Trapezoidal = HF1 Area = Length A * Breadth B * Height H1F2 Area = H2/3 * ( A1 + A2 + √ (A1 * A2 ))A1 (Bottom area of Trapezoidal) = Length A * Breadth BA2 (Top area of Trapezoidal) = Length a * Breadth bF1 = Base Footing areaF2 = Traprzoidal Area of FootingLength A = Bottom Footing Length of X-direction.Length B = Bottom Footing Length of Y-direction.Length a = Top Footing Length of X-direction.Length b = Top Footing Length of Y-direction.H1 = Height of Bottom Footing.H2 = Height of Terpziodal Footing.