### Home > CCA2 > Chapter 7 > Lesson 7.1.4 > Problem 7-69

7-69.

Find the distance between two opposite corners of the box.

Draw a right triangle on the base of the box.

Find the measure of the hypotenuse.

4² + 5² = *c*²

Now draw a right triangle from the bottom corner to the top of the box.

Find the measure of that hypotenuse.

*c*² + 3² = *d*²

7.07'