The diagram shows a parallelogram ABCDABCDABCD. The top side AB AB\,AB has a length of 3x+53x + 53x+5. The bottom side DC DC\,DC has a length of 5x−95x - 95x−9.

ABCD ABCD\,ABCD is a parallelogram. All measurements are in centimetres. The perpendicular height of the parallelogram is 5 cm.
Find the area of ABCDABCDABCD