P este 420 m .lungimea este de 4 ori mai mare decat latimea . aflati lungimea si latimea?

2
l=L×4 ;, L+ Lx4= 420 ; L= 420:5 ; L=84; l=84x4 l=336
Scz 85 si dupaia calculezi tu latimea corect
P=(L+l) P=(4L+L) P=10L 430=10L L=42 P=2(42+l) P=84+2l 420=84+2l 336=2l l=168

Răspunsuri

2014-05-20T21:57:14+03:00


L _______ _______ ______ ______

l _______                                                                                  =420

420:5=85(m are l)

85x4=340(m are L)

Succes!

1 5 1
2014-05-20T23:47:19+03:00
4 l =   L
l + l + L + L = 420 m
inlocuim L cu 4 l
4lL + 4 l + l + l = 420
10 l = 420
l = 420 / 10
l = 42 M
L = 42 * 4 
L = 168 M