### Home > PC > Chapter 3 > Lesson 3.1.1 > Problem 3-13

3-13.

Find the

*exact*length of. Express your answer in simple radical form.Use the Pythagorean Theorem. Since both legs are the same length,

. Label these sides.What is the exact value of

? Use the value found in part (a) in the formula:

What is the exact value of

?