Add them all up and if they add up to 180 then your side lengths are good
Caleb is participating in a walk-a-thon. His goal is to walk as far as possible over an 8-hour period.
For the first 3 hours, he keeps a steady pace of 2 miles per hour.
He then stops walking while he takes a 1-hour break for lunch.
It's too short. Write at least 20 characters to explain it well.
The correct answer would be <u><em>B. 2 - 1/3</em></u>