\(\text{Perimeter of triangle} = \text{Sum of all three sides}\)
= \(10\) \(cm\) + \(14\) \(cm\) + \(15\) \(cm\)
= \(39\) \(cm\)
Thus, the perimeter of triangle is \(39\) \(cm\).
Complete the drawing shown in Fig. 9.14 to indicate where the free ends of the two wires should be joined to make the bulb glow