A triangle has side lengths of 7cm, 5c and c cm enter a value to complete the inequality that describes the possible values for c, the length of the third side

Hmm if i renember correctly the pythagoren theyrom was a^2+b^2=c^2 so in this case c should be 7^2+5^2=c^2 which equals to 49+10=c so 59 = c. I think? You can ask again if im wrong