Divrey Hayamim Bais 4:1-2

Orthodox Jewish Bible

4 Moreover he made a Mizbe’ach nechoshet, twenty cubits the length thereof, and twenty cubits the width thereof, and ten cubits the height thereof.

² Also he made a Yam Mutzak (Molten "Sea") of ten cubits from brim to brim. It was round, and five cubits the height thereof, and a line of thirty cubits did completely encircle it.