ten cubits ... one hundred cubits

Each long cubit was about 54 centimeters. See how you translated this in Ezekiel 40:5. AT: "10 cubits ... 100 cubits" or "about 5.4 meters ... about 54 meters" (See: rc://en/ta/man/translate/translate-bdistance)

smaller in size compared to the rooms

"smaller than the rooms"