Răspuns :
[tex]l = 5 \frac{1}{9} = \frac{5 \times 9 + 1}{9} = \frac{45 + 1}{9} = \frac{46}{9}=5.(1) [/tex]
[tex]P = 4l = 4 \times \frac{46}{9} = \frac{184}{9} = 20.(4) [/tex]
[tex]P = 4l = 4 \times \frac{46}{9} = \frac{184}{9} = 20.(4) [/tex]
5 intregi si 1/9 = 45-1 totul / 9 = 44/9
Perimetrul egal cu 4 x 44/9 =176/9