The required time for drying a 1 kg solid is 2 hours in the region of constant drying. If the X1=0.2 in the base and the critical moisture is Xc=0.09 (Dry base), and the critical rate of drying in content flux is 0.1 Kg/h.m?, i. Calculate the area of surface of the solid ii. Calculate the time of drying in constant rate period, if the convective coefficient of heat transfer, increase 3 times. iii. Draw the drying curve and label it