[填空题]
A triangular plot of farming land is shown in the diagram pwbc9.z x, oq6 -viie,pc3lx/below. The juyp;1 1i m ec. wqk)x6+jy;mylongest side is 1201yx )mq1eu 1;i.ycjwj+p;6 myk 20 m, with the two adjoining angles to this length being $35^{\circ}$ and $25^{\circ}$.
1.Find the lengths of two other sides of this plot of land.a$\approx$ m,b$\approx$ m
2.Find the area of the plot of farming land. $m^2$
