Question

A ladder 17 m long is placed at a distance of 15 m away from the wall to reach
a window. Find the height of the window. If the ladder is kept at a distance of
8 m away from the wall, it reaches the roof. What is the height of the roof
above the ground?​

Answer 1

Answer:

Step-by-step explanation:

the main thing is why is the leader 17 meter long telll me

Answer 2

Step-by-step explanation:

The ladder will form a right angled triangle with the wall with hypotenuse 17m and one side 15m. We have to find the third side

Use Pythagoras theorem

\begin{gathered}17^{2}= 15^{2}+x^{2} \\ x^{2} = 17^{2} - 15^{2} = 289-225 = 64 \\ x = \sqrt{64} = 8 m\end{gathered}

17

2

=15

2

+x

2

x

2

=17

2

−15

2

=289−225=64

x=

64

=8m