**A hallway of width 5.8 feet meets a hallway of width 8.73 feet at right angles.**

**Find the length of the longest pipe that can be carried level around this corner.**

**Answer:**

The length of the longest pipe is calculated by sqrt[(5.8 +8.73)^2 + (5.8 +8.73)^2] = sqrt[14.53^2 + 14.53^2] = sqrt[439.8578] = 20.97. Almost 21 feet!