The sides of a triangular park are in the ratio (3x : 5x) and the area and the length of the perpendicular drawn in the biggest side are:
a) (/9x²/2), (/5x/2)
b) (/15x²/2), (/3x/2)
c) (/9x²/2), (/3x/2)
d) (/15x²/2), (/5x/2)