# the round sea

This refers to a particular bronze tank or basin in the temple. It held a lot of water and was called "the sea."

# cast metal

Huram melted the bronze and formed it in a mold.

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

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

# from brim to brim

"from one edge to the other"