# ten cubits ... five cubits ... thirty cubits

"4.6 meters ... 2.3 meters ... 13.8 meters"

# the round sea of cast metal

A tank or basin that would hold water. This is metal that was melted then formed in a mold.

# from brim to brim

"from one edge to the other"

# in circumference

Circumference is the distance or measurement around a circular object or area.