Răspuns :
Perim.ABCD=AB+BC+CD+AD=2AB+2AD
AD=AB+6
2×(AB+6)+2AB=44
2AB+12+2AB=44
4AB=44-12=32=》AB=8=》AD=14
AD=AB+6
2×(AB+6)+2AB=44
2AB+12+2AB=44
4AB=44-12=32=》AB=8=》AD=14