Read Exodus 36:15 Using Other Translations
The length of one curtain was thirty cubits, and four cubits was the breadth of one curtain: the eleven curtains were of one size.
The length of each curtain was thirty cubits, and the breadth of each curtain four cubits. The eleven curtains were the same size.
These eleven curtains were all exactly the same size—45 feet long and 6 feet wide.