SSC JE Civil Engineering 23-Sep-2019 Shift 2 Solved Paper

In simpson's rule, the irregular boundaries between the ends of ordinates are assumed to form an arc of parabola. This method is used to calculate area between irregular boundaries.
Total area = $\frac{\mathrm{Common}\mathrm{distance}}{3}$ {1${}^{\mathrm{st}}$ ordinate + last ordinate) + 4(sum of even ordinates) + 2(sum of remaining odd ordinate)}