### Home > CC2 > Chapter 1 > Lesson 1.1.1 > Problem 1-5

1-5.

According to the diagrams below, how long is each unknown piece? Homework Help ✎

How long is the entire length?

Which part ismm?

Try to answer the question with these things in mind.How long is the unknown length?

mm, because . How long is the shorter unknown length?

The shorter length is

mm. Explain why on your paper. Now use the same method to find the entire length.