3. Find the sides of an equilateral triangle

The two vertices of an equilateral triangle are the centres of the circles having the radii 5 \(cm\) and 11\(cm\), respectively. If the circles touch each other externally at a point, then find the measure of the side of the given triangle.

 

Answer:

 

The measure of the sides of the equilateral triangle \(=\)  \(cm\).