👤

aflati lungimea inaltimi AA' a unui triunghi ABC stiind ca aria triunghiului=12 cm patrati ,iar BC=2\3AA'

Răspuns :

AABC=(b*h)/2
b*h=12 cm^2*2
b*h=24 cm^2
BC=2AA'/3
2AA'/3*AA'=24 cm^2
2AA'^2=24 cm^2*3
AA'^2=72 cm^2/2
AA'^2=36 cm^2
AA'=+/-√36 cm
AA'=+/-6 cm
AA'=6 cm