Question

Perimetrul unui paralelogram ABCD este egal cu 100 cm. Aflati lungimile laturilor paralelogramului stiind ca AB/BC=2/3

Answer 1

AB/BC=2/3=>AB/2=BC/3=K (schimbarea mezilor intre ei)
AB=2K
BC=3K

ABCD-paralelogram=>AB=CD, BC=AD
AB+BC+CD+AD=100
2K+3K+2K+3k=100
10K=100
K=10=>AB=CD=20 cm
BC=AD=30 cm

Sper ca te am ajutat!

Answer 2

Daca 2AB + 2BC = 100 (perimetrul) si AB/BC = 2/3 adica 3AB = 2BC =>

2AB + 3AB = 100 => 5AB = 100 => AB=20 cm

Astel 40 + 2BC = 100 => 2BC = 60 => BC=30 cm