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ip:Triunghiul ABC,B=90grade,BD_|_DC,D apartine AC,BC=16cm,DC=12,8cm.
C:P triunghiului ABC=?


Răspuns :

[tex]\it T.catetei \Rightarrow 12,8\cdot AC=256\bigg|_{\cdot10} \Rightarrow 128\cdot AC=2560\bigg|_{:128} \Rightarrow AC=20\ cm\\ \\ (12,\ 16,\ 20) -triplet\ pitagoreic \Rightarrow AB=12\ cm\\ \\ \mathcal{P}=12+16+20=48\ cm[/tex]