We just bought a pool for our backyard. I want to know how long it will take to fill it up? Will it be ready by the time my cute Clara and Freddy get here?

What is my problem?

What do I know and need to know?

Let’s assume that the hose fills the pool at the rate of .5 gallon per second.

My pool is 15 feet in diameter.

Do the math!

Reflect on the solution!

Do I need to revise my math model?

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