Question

un dteptunghi ate perimetrul de 230cm care rste lungimea lui daca latimea este un sfert don lungjme

Answer 1

P=2(L+l)
P=230cm
l=L/4=>L=4l
230=2(4l+l)=>230=10l=>l=230:10=>l=23 cm
L=4x23=>L=92 cm

Answer 2

P=(L+l)*2=230cm
l=L:4⇒L=4l
L=?

(L+l)*2=230cm
(4l+l)*2=230cm
5l*2=230cm
10l=230cm
l=230cm:10
l=23(cm latimea)
L=4*23cm
L=92(cm lungimea)