Answer
117cm
Work Step by Step
$a^{2}$ +$b^{2}$ =$c^{2}$ Let a=108cm and b=45cm
$108^{2}$ +$45^{2}$ =$c^{2}$
11664+2025 =$c^{2}$
13689 =$c^{2}$
c=$\sqrt 13689$
c= 117 cm
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