### Home > CCA > Chapter 1 > Lesson 1.2.4 > Problem 1-66

1-66.

If ,

*find*

*,*

*, and*

*.*

Substitute the given values for .

After seeing the first two done for you, attempt the third one on your own.

If you do not get a perfect square, approximate your answer to the nearest hundredth by using a calculator.