In the given diagram, Two triangles, ΔPQR and ΔSQR are on the same base QR but on opposite sides of QR. PS and QR intersect each other perpendicularly at O. If OP = x cm, OS = y cm and the area of ΔPQR = a cm2, then what is the area (in cm2) of ΔSQR?
1
\(\frac{{{\rm{ya}}}}{{\rm{x}}}\)
2
\(\frac{{{\rm{yx}}}}{{\rm{a}}}\)
3
\(\frac{{{\rm{xa}}}}{{\rm{y}}}\)
4
\(\frac{{{\rm{x}}}}{{\rm{ya}}}\)