Answer: The answer would be 16.
Step-by-step explanation:
[tex]a^{2} +b^{2} =c^{2} \\11^2+12^2=c^2\\121+144=c^{2} \\\sqrt{265} =\sqrt{c^2} \\c=16.27\\c=16[/tex]
16 is the smallest possible whole number for the length of the third side. By using the Pythagorean Theorem, we are able to find the third side.