Answer:
C. 13 inches
Explanation:
Use the Pythagorean Theorum which is a^2+b^2=c^2. You only know a and b so plug them in. 5^2+12^2=c^2. Simplify to 25+144=c^2. Simplify again to get 169=c^2. Find the square root of 169, which is 13 and there is your answer.
using pythagorean theorem
a^2 + b^2 =c^2 where a and b are the legs and c is the hypotenuse
5^2 + 12^2 = c^2
25+144 =c^2
169 = c^2
take the square root of each side
sqrt(169) = sqrt(c^2)
13 = c
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