Question

what is the length of x?

Explanation:

Step1: Apply Pythagorean theorem

$$x^{2}=3^{2}+4^{2}$$

Step2: Calculate squares

$$x^{2}=9 + 16$$

Step3: Sum

$$x^{2}=25$$

Step4: Take square root

$$x=\sqrt{25}$$

Answer:

\(5\)