Răspuns :
l=L/4
P=2(L+l)=32.6
2(L+L/4)=32.6
5L/4=16.3
L=13.04
l=13.04/4=3.26
P=2(L+l)=32.6
2(L+L/4)=32.6
5L/4=16.3
L=13.04
l=13.04/4=3.26
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32,6:10=3,26 latime
3,26*4=13,04 Lungime
3,26+3,26+13,04+13,04=32,6----perimetrul