Question

Va rog !!!!
DAU COROANA !!!!

Exercitiul 20

Answer 1

P,dreptunghi=2(L+l)=34cm=>L+l=17
ΔABC,este,dreptunghic
AB+BC+AC=30
Stim,ca,AB+BC=17
=>AC=13cm

Intr-un,dreptunghi,diagonalele,sunt,congruente,si,se,injumatatesc.
=>AM=AC/2=13/2=6,5cm

Answer 2

P ABC  =AB     +BC    +AC=30 /*2 =>2*AB+2*BC+2*AC=60
P ABCD=2*AB+2*BC        =34            2*AB+2*BC=34    Le scadem
=> 2*AC=60-34=26=>AC=13 cm
Intr-un dreptunghi diagonalele se injumatetesc(au acelasi mijloc)=> AM=AC/2=13/2=6,5 cm