[tex] \huge \purple{\tt{Answer:}} [/tex]
Area of a triangle = [tex] \sf{{\dfrac{1}{2}} \times base \times height} [/tex]
[tex] \implies{\dfrac{1}{2}} \times 6 \times height = 36 [/tex]
[tex]\implies height={ \dfrac{{\bcancel{36}^6}\times{2}}{{ \bcancel6}}} [/tex]
[tex] \implies height = 12~m [/tex]