Răspunsuri

2014-09-18T09:05:00+03:00
P = 1,2 m 
4·l = 1,2m / : 4
l = 0,3 m
A = l²
A = 0,3²
A = 0,09 m²

Sau in centimetri :

P = 120 cm
4·l = 120 / : 4
l = 30 cm
A = l²
A = 30²
A = 900 cm²
2014-09-18T09:11:08+03:00
P=1,2m,A=l la patrat
P=4l=1,2,l=0,3m
A=0,3la patrat=0,09m