14) What is the quantity of cutting given the ground level as 220.50 and formation level is 218.90?

15) What is the minimum number of cross-sections required to find the quantity of earth work using trapezoidal formula?

16) What minimum number of cross-sections required for applying prismoidal formula in volume calculations?

17) What is the nature of earth work if the G.L.218 and F.L.220?

18) What is the nature of earth work if the G.L.300 and F.L.280?