alas=12cm,tinggi=8cm, berapakah keliling segitiga?

[tex]s {}^{2} = a {}^{2} + t {}^{2} \\ s {}^{2} = 12 {}^{2} + 8 {}^{2} \\ s {}^{2} = 144 + 64 \\ s {}^{2} = 208 \\ s = \sqrt{208} \\ s = 4 \sqrt{13} \: \: cm \\ \\ k = 4 \sqrt{13} + 4 \sqrt{13} + 12 \\ k = 8 \sqrt{13} + 12[/tex]