## Basic College Mathematics (10th Edition)

The unknown length is $9.2$ cm long.
1. Use the Pythagorean Formula to solve for the missing length $a^{2} + b^{2} = c^{2}$ $c^{2} = 7^{2} + 6^{2}$ $c^{2} = 49 + 36$ $c^{2} = 85$ $c = \sqrt 85$ $c = 9.2195...$ cm $c = 9.2$ cm