Determine 82595

A ladder is 7 meters long and is leaning against a wall so that its lower end is 4 meters away from the wall. Determine how high the ladder reaches

Correct answer:

y =  5.7 m

Step-by-step explanation:

$$\begin{gathered} c=7\text{m} \\ a=4\text{m} \\ {c}^2=a^2+y^2 \\ y=\sqrt{c^2-a^2}=\sqrt{7^2-4^2}=\sqrt{33}=5.7\text{m} \end{gathered}$$

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