Question

A square has a side lengths of 9, use the pythagorean theorem to find the length of the diagonal

Answer 1

The diagonal length is 12.73 units

Answer 2

`{a}^(2) + {b}^(2) = {c}^(2) \\ {9}^(2) + {9}^(2) = {c}^(2) \\ {81} + 81 = {c}^(2) \\ 162 = {c}^(2) \\ √(162) = \sqrt{ {c}^(2) } \\ 12.73 = c`
the length of the diagonal is 12.73