The measurement described, "the distance around the outside of a pool," represents the perimeter. The perimeter is the total length of the boundary or the outline of a two-dimensional shape. In this case, it's the total length around the pool.

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Here are 5 related questions to expand on this information:

1. How do you calculate the perimeter of a rectangle-shaped pool?
2. What is the difference between perimeter and area?
3. How would the perimeter change if the pool was circular rather than rectangular?
4. Can you calculate the perimeter of an irregularly shaped pool?
5. What are some real-life applications of calculating perimeters?

Tip: When dealing with circular shapes, the perimeter is referred to as the "circumference."