Răspunsuri

2014-06-19T17:08:24+03:00
P=4xl
20=4xl
l=20:4
l=5

Aria=lxl
Aria=5x5
Aria=25
1 4 1
2014-06-19T17:08:57+03:00
Perimetul=20 = 4x latura
deci latura =20:4=5
aria = l² =25
2 3 2