Răspuns :
[tex] \frac{a}{4} = \frac{b}{5} = \frac{c}{6} = k \\ a = 4k \\ b = 5k \\ c = 6k \\ a + b + c = 45 \\ 4k + 5k + 6k = 45 \\ 15k = 45 \\ k = 3 \\ a = 12 \\ b = 15 \\ c = 18[/tex]
Fie ABC triunghi
AB/4=BC/5=AC/6=K
AB=4K
BC=5K
AC=6K
4K+5K+6K=45(AB+BC+AC)
15K=45
K=3
AB=3•4=12cm
BC=3•5=15cm
AC=3•6=18cm
AB/4=BC/5=AC/6=K
AB=4K
BC=5K
AC=6K
4K+5K+6K=45(AB+BC+AC)
15K=45
K=3
AB=3•4=12cm
BC=3•5=15cm
AC=3•6=18cm