Question

Can someone help me with #1. I’m really lost and could use the help.

Answer 1

1)

Let's draw a diagram of the situation:

We can find h (The length of the ladder) using pythagorean theorem:

so:

$\begin{gathered} c^2=a^2+b^2 \\ so\colon \\ c=\sqrt[]{4^2+22^2} \\ c=\sqrt[]{16+484} \\ c=\sqrt[]{500} \\ c\approx22.4ft \end{gathered}$