Translations for extent in French

Here are paragraphs from public domain books translated:

"You hear, madame," said the king, who enjoyed the embarrassment to its full extent, but without guessing the cause. "You hear, madame?"	— Vous entendez, madame, dit le roi, qui jouissait de cet embarras dans toute son étendue, mais sans en deviner la cause, vous entendez ?
The Three Musketeers, by Alexandre Dumas	Les Trois Mousquetaires, de Alexandre Dumas