$\"\"$

The lengths of two sides of a right triangle are $\"\"$ .

To find: hypotenuse c.

Apply Pythagorean theorem: $\"a$

$\"\"$ (Substitute 10.4 for a and 16.9 for b)

$\"\"$ (Evaluate powers: $\"\"$ ) $\"\"$

$\"\"$ (Add: $\"\"$ )

$\"\"$ (Apply square root to each side)

$\"\"$ (Cancel sqaure and root)

$\"\"$ (Use a calculator to find $\"\"$ ) $\"\"$

The length of the hypotenuse is $\"\"$ .