Question

The altitude of an equilateral triangle is 9 inches. Find the perimeter of the triangle in inches.

Answer 1

Explanation:

its 27 to the square root of 3

Answer 2

`\bf \textit{height of an equilateral triangle}\\\\ h=\cfrac{s√(3)}{2}\implies 2h=s√(3)\implies \cfrac{2h}{√(3)}=s\qquad \begin{cases} h=height\\ s=\textit{one side's length} \end{cases}`

anyway, the perimeter will all sides added together, namely s + s + s or 3s