One wing of the first cherub was five cubits long, and the other wing was five cubits long as well. So the full wingspan was ten cubits.
Jewish Publication Society of America Version (JPS1917) - 1 Kings 6:24 >And five cubits was the one wing of the cherub, and five cubits the other wing of the cherub; from the uttermost part of the one wing unto the uttermost part of the other were ten cubits.