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in triunghiul dreptunghic cu ipotenuza de 20cm si o cateta de 12 cm are perimetrul egal cu....cm

Răspuns :

[tex]I = 20 \: cm[/tex]

[tex]C_{1} = 12 \: cm[/tex]

[tex]{I}^{2}={C_{1}}^{2}+{C_{2}}^{2}[/tex]

[tex]{C_{2}}^{2} = {I}^{2} - {C_{1}}^{2}[/tex]

[tex]{C_{2}}^{2} = {20}^{2} - {12}^{2} [/tex]

[tex]{C_{2}}^{2} = 400 - 144[/tex]

[tex]{C_{2}}^{2} = 256[/tex]

[tex]C_{2} = \sqrt{256} [/tex]

[tex]C_{2} = 16 \: cm[/tex]

[tex]P=I+C_{1}+C_{2}[/tex]

[tex]P=20 + 12 + 16[/tex]

[tex]P = 48 \: cm[/tex]