Pythagorean Theorem
a^2 + b^2 = c^2
so
b^2 = c^2 - a^2
Plug in
b^2 = 13^2 - 7^2
b^2 = 169 - 49
b^2 = 120
b = √120
Answer
c. √120 centimeters
9.5m questions
12.2m answers