EXPLANATION:
To calculate the diagonal distance we must follow the following steps:
-The length corresponds to the horizontal dimension of the screen.
-The height corresponds to the vertical dimension of the screen.
Now we must apply Pythagoras' theorem
[tex]\begin{gathered} a^2+b^2=c^2 \\ a=4 \\ b=9.4 \\ c=diagonal\text{ distance} \\ a^2+b^2=c^2 \\ (4)^2+(9.4)^2=c^2 \\ 16+88.36=c^2 \\ 104.36=c^2 \\ \sqrt[]{104.36=c} \\ c=10.21 \\ \text{ANSWER: 10.21 Inches} \end{gathered}[/tex]