How much does this value become when squared?

He used to be the village's magistrate.

His words had a great influence.

His strong leadership led the team to success.

The tension of this rubber band is very strong.

His hearing ability is very excellent.

His family's crest tells the story of ancient history.

He cannot read the letter because he is illiterate.

He found a solution to the problem through a cycle of answering his own questions.

He found a solution by repeatedly answering his own questions.