Pake cara ya kak, makasih :)

gunakan cara phytagoras
[tex]panjang \: kawat \: = \: \sqrt{( {t}^{2} + {a}^{2}) } \\ = \: \sqrt{ ({8}^{2} + {6}^{2}) } \\ = \sqrt{64 + 36} \\ = \sqrt{100} \\ = 10 \: m[/tex]