1 John used landscape timbers to create a border around a garden shaped like a right triangle. The longest two timbers he used are 12 feet and 15 feet long. Which is closest to the length, in feet, of the shortest timber?

2 John is walking home with his younger brother, Don. Their home is on the opposite corner of a rectangular lot with dimensions of 500 feet by 800 feet. John decides to walk along two sides of the lot, while Don takes the direct diagonal path home.

About how much farther does John walk than Don?