He location of four buildings on a coordinate grid are as follows: Building 1 is at (−5, −3) .

Building 2 is at (−5, 5) .

Building 3 is at (4, 5) .

Building 4 is at (4, −3) .

A bike courier begins at building 1 and then delivers packages to building 2 and then building 3, and then building 4. Then she bikes back to building 1. The path between each building is a straight line. One unit on the coordinate grid equals 100 feet.

What is the total distance the courier biked?

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