Răspuns :
1. BM=AD=3cm
2. DM=AB=2cm
3. MC - aplicam teorema lui Pitagora
[tex]BC^{2}[/tex]=[tex]MC{2}[/tex]+[tex]BM^{2}[/tex]
25=[tex]MC^{2}[/tex]+9
[tex]MC^{2}[/tex]=16
MC=4
4. DC= DM+MC=2+4=6 cm
BM = AD = 3cm
DM = AB = 2cm
MC = 4cm ( BMC - triunghi pitagoreic)
DC = DM + MC = 4 + 2 = 6cm