imi puteti explica cum se face vă rog,multumesc!
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[tex]a = ad \times ab[/tex]
[tex]ad = 2 \times 5 = 15 \: cm[/tex]
[tex]bc = ad =1 0 \: \: o \: \: piesa[/tex]
[tex]am = 10 + 5 = 15 \: \: cm[/tex]
[tex]a = > \\ 10 \times 15 = 150 \: cm {}^{2} [/tex]