Question

Dau coroanaaaaa
Perimetrul unui triunghi isoscel ABC(AB=AC)este 36 cm.
a)daca AB=10cm,aflati BC.
b)Daca BC=10cm,aflati AB

Answer 1

a)AB=AC=10 cm
P=10+10+BC
36=20+BC =>BC=16 cm

b)AB+AC+BC=36
X + X + 10 = 36
2X = 36-10
2X = 26 => X=13 cm=AB=AC

Answer 2

Salut!
avem un triunghi isoscel
a) stim ca ab=10/
(ab=ac) /=> ac=10
P=ab+bc+ac
36=10+10+bc
36=20+bc
bc=36-20=16

b)bc=10
P=2ab+bc
36=2ab+10
26=2ab
ab=13
(am pus 2ab pentru ca ab=ac)