Question

Please help me with this geometry problem :) (problem on image)

Answer 1

from the picture above we can see that we have an altitude or height for the triangle of 5, so then

`\textit{height of an equilateral triangle}\\\\ h=\cfrac{s√(3)}{2} ~~ \begin{cases} s=\stackrel{side's}{length}\\[-0.5em] \hrulefill\\ h=5 \end{cases}\implies 5=\cfrac{s√(3)}{2}\implies 10=s√(3) \\\\\\ \cfrac{10}{√(3)}=s\implies 5.8\approx s = x`