Ethernet cable

Charles and George are passionate gamers and live in houses opposite each other across the street so they can see each other through the windows. They decided their computers would connect to the telephone cable to play games together. Charles lives on the first floor, and the window is 4.5 meters above the sidewalk. George lives on the third floor, and the window has a height of 10.1 meters.
Street from house to house 10 meters wide. How many meters of telephone cable will they need for this connection?

Each of them will have a computer located in a room 2 meters from the window.

Correct answer:

x =  15.5 m

Step-by-step explanation:

$$\begin{gathered} a=\sqrt{10^2+(10.1-4.5{)}^2}\doteq 11.4612\text{m} \\ x=2+2+a=2+2+11.4612=15.5\text{m} \end{gathered}$$

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