[tex] {8}^{2}+ {h}^{2} = {10}^{2} \\ 64 + {h}^{2} = 100 \: \: \: | - 64 \\ \: {h }^{2} = 36 \: \: \: | \sqrt{} \\ h = \sqrt{36} \\ h = 6[/tex]
