Answer :
Using the the Pythagorean theorem, the answer is C. 115 cm
Here's how you solve it:
(77^2)+(85^2) = f^2
5929+7225 = f^2
13154 = f^2
f = √13154
f = 114.69
f ≈ 115
Here's how you solve it:
(77^2)+(85^2) = f^2
5929+7225 = f^2
13154 = f^2
f = √13154
f = 114.69
f ≈ 115