Answer:
third side = 11
Explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
third² + 60² = 61²
third² + 3600 = 3721 ( subtract 3600 from both sides )
third² = 121 ( take the square root of both sides )
third =
= 11
The third side is 11 units