Based on the width of the boards, how long was the Mishkan?
1.
Rashi: The twenty boards, at one and a half Amos each, measured thirty Amos - the length of the Mishkan.
2)
Why does th Torah not give the thickness of the boards?
1.
Oznayim la'Torah: Because whereas their width and the height teach us the measurement of the Mishkan, there is nothing to learn from their thickness.
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