First of all, we must learn to be rigorous in mathematical thinking and meticulous in doing things.

Your question may be a polygon EFBCD, A is on ED, F is at the intersection of FC and AB, ED= 16.3, AD=8, AB=6, BC=9.4, CD=5, EF=9.6, unit: m, find out how many acres the polygon EFBCD has.

Is there a right angle in the picture? Are there parallel lines? It's not clear yet.

After the conditions are clear and accurate, it is easy to answer.