p2=339 p1=x x=339/2=169,5 p1=169,5
P=2(L+l) 169,5=2(x+12x)
169,5/2=x+12x
84,75/13=x
x=6,51 ( dimensiunea primului teren )
proba : p=2(L+l)
p=2(6,51+6,51)=84,75
p2=169,5/2=84,75
84,75=2(L+l)
84,75/2=x+12x
42,375/13=3,259
proba: 3,259+3,259=6,518*2=42,375(d.al 2-lea teren)