Podcast – 02: Glass half full?

I have two cylindrical glasses that, when full, hold the same amount of water. The short glass has a radius that is half again as large as the tall one’s. Last night, I filled the short one completely, and then I filled the tall one to exactly the same level. // How full was the tall glass? (You can answer as a fraction or a percentage.) // Spiciness: * out of ****