Answer: 13 cm
Step-by-step explanation:
Very simple! Use the pythagorean theorem: c^2 = a^2 +b^2, where c is the hypotenuse (longest side) on the right triangle (which is denoted by the little square in the P corner).
5^2 + 12^2 = 25 +144 = 169
so, the square root of 169 is the answer, or 13.
Let me know if you have any other questions!
