Reference for Exodus 36:21

עֶ֥שֶׂר אַמֹּ֖ת אֹ֣רֶךְ הַקָּ֑רֶשׁ וְאַמָּה֙ וַחֲצִ֣י הָֽאַמָּ֔ה רֹ֖חַב הַקֶּ֥רֶשׁ הָאֶחָֽד׃

Ten cubits was the length of a board, and a cubit and a half the breadth of each board.

BDB

BDB