[tex] \bf \underline{Solution-} \\ [/tex]
[tex] \sf{ \sqrt[3]{ - 216} } \\ [/tex]
[tex] = \sf{ \sqrt[3]{ \bigg( \frac{1}{216} \bigg)} } \\ [/tex]
[tex] = \sf{ \sqrt[3]{ \bigg( \frac{1}{6} \bigg)^{3} } } \\ [/tex]
[tex] \sf{ = \bigg( \frac{1}{6} \bigg) ^{ \cancel3 \times \frac{1}{ \cancel3} } } \\ [/tex]
[tex] \sf = \bigg( \frac{1}{6} \bigg)^{1} \\ [/tex]
[tex] \sf = \frac{1}{6} \: \: \: \: Ans. \\ [/tex]
