According to Deuteronomy 3:11, how long was the iron bed of Og king of Bashan?

Answer: Nine cubits

Og, the last of the Rephaim, had an iron bed nine cubits long and four cubits wide, kept in Rabbah of the Ammonites.

“(For only Og king of Bashan had remained of the remnant of the Rephaim. His bed of iron, nine cubits long and four cubits wide, is still in Rabbah of the Ammonites.)”— Deuteronomy 3:11 (BSB)