# The diagonal of a rectangle is 110cm and its width is 63cm. How do you find its length?

Length = 90.172 cm

#### Explanation:

${110}^{2} = {63}^{2} + {x}^{2}$

${x}^{2} = {110}^{2} - {63}^{2}$

${x}^{2} = 12100 - 3969$

${x}^{2} = 8131$

$x = \sqrt{8131}$

$x = 90.172$