Question

va rog repedeeedeeeee...​

Answer 1

P=80cm

P=(l+L)×2

L=l×3

____

(l+l×3)×2=80

4l×2=80

8l=80

l=10cm (latimea)

L=10×3

L=30cm (lungimea)

verificare: (30+10)×2=40×2=80 (A)

Answer 2

Răspuns:

P = 80 cm.

L= 3×l

P=2× 3×l×2×l +l =80 => l = 10 cm, L= 3× l= 3× 10cm.= 30cm

Sper că te-am ajutat!