Answer:
[tex]c = 41[/tex]
Step-by-step explanation:
[tex] {c}^{2} = \sqrt{ {a}^{2} + {b}^{2} } [/tex]
[tex]c = \sqrt{ {a}^{2} + {b}^{2} } [/tex]
[tex]c = \sqrt{ {9}^{2} + {40}^{2} } [/tex]
[tex]c = \sqrt{81 + 1600} [/tex]
[tex]c = \sqrt{1681} [/tex]
[tex]c = 41[/tex]
