Question 173
Let $P$ be a point inside the equilateral triangle $ABC$ such that: $$
PA = 5, \quad PB = 7, \quad \text{e} \quad PC = 8
$$ Determine the side of the triangle $ABC$.
PA = 5, \quad PB = 7, \quad \text{e} \quad PC = 8
$$ Determine the side of the triangle $ABC$.