What is the length of in the right triangle below?
A.
120
B.
C.
D.
218

Answer:
b. sqrt(120)
Step-by-step explanation:
a^2+b^2=c^2
a^2+7^2=13^2
13^2-7^2=a^2
120=a^2
sqrt(120)=a
This is using Pythagorean theorem