Question

5. An electric pole is 9 m high. A steel wire tied to the top of the pole is affixed at a point on the ground at a distance of 12 m from the foot of the pole. Find the length of the wire. ​

Answer 1

Answer:

The length of the wire is ​15 m

Step-by-step explanation:

Given : The arrangement makes a right angled triangle.

            Here height = 9m , base = 12m , length = ? (hypotenuse)

            by applying pythogorous theorem

            $Hypotenuse^{2}$ = $Height^{2}$ + $Base^{2}$

                                      = $9^{2}$ + $12^{2}$

                                      = 81+ 144

                                      = 225

            Taking square root on both sides

             Hypotenuse = $\sqrt{225}$

                                   = 15m

           ∴ The length of the wire = 15m