Which of the following sets of possible side lengths forms a right triangle? 12, 35, and 38 11, 60, and 61 9, 40, and 45 6, 12, and 13

The possible sides of a rectangle triangle are:
 11, 60, and 61
 Let's check it using the Pythagorean theorem.
 We have then:
 ROOT ((a) ^ 2 + (b) ^ 2) = c
 Where,
 a = 11
 b = 60
 ROOT ((11) ^ 2 + (60) ^ 2) = 61
 
 11, 60, and 61