Genesis 6:15

15This is how you are to make it: the length of the ark 300 cubits,
A  cubit was about 18 inches or 45 centimeters
its breadth 50 cubits, and its height 30 cubits.

2 Chronicles 3:15

15 bIn front of the house he made two pillars thirty-five cubits high, with a capital of five cubits on the top of each.
Copyright information for ESV