Too bad you have no idea on Geometry. I could have asked you some more information---like, is AB perpendicular to both BC and AD---and then I could have shown a solution, but you wouldn't understand it, so no use.
Anyway, if AB is perpendicular to BC and AD, then the area of triangle XYA is 65 sq.cm.
If AB is not perpendicular to BC and AD, then the solution is more complicated. I dared not venture into any solution here.
If a picture/diagram/figure can be shown here, we might be able to solve question. Since you have no idea on Geometry, then you have no idea also on the usefulness/importance of a picture/diagram/figure in solving questions like your question here.