Răspuns :
ok socotim ca primele 2 laturi sunt 2m iar celelalte 2 4m
Facem astfel 2*4=8m aria
Facem astfel 2*4=8m aria
[tex]P_{d} =2*(L*l);[/tex]
[tex]A_{d} =L*l;[/tex]
[tex] P_{d} =10 m[/tex]
[tex] A_{d} = P_{d} :2[/tex]
[tex] A_{d} =10m:2=5 m^{2} [/tex]
[tex]A_{d} =L*l;[/tex]
[tex] P_{d} =10 m[/tex]
[tex] A_{d} = P_{d} :2[/tex]
[tex] A_{d} =10m:2=5 m^{2} [/tex]