Răspunsuri

2014-05-18T12:38:33+03:00
A) A=l² => l=5 cm => P=5*4=20 cm
b) A=l² =>l=8cm = > P=8*4=32 cm
c) A=l²=>l=18 cm => P=18*4 = 72 cm
3 4 3
2014-05-18T12:38:56+03:00
A)A=l²= 25  ⇒l=5  P=4l=4*5=25

b)A=64  ⇒l=√64=8  ⇒P=4*8=32

c)A=324  ⇒l=√324=18  ⇒P=4*18=72
1 5 1