Genesis 6:15

This is how you are to build it: The ark is to be 450 feet long, 75 feet wide and 45 feet high.

(New International Version)

'This is how you shall make it: the length of the ark three hundred cubits, its breadth fifty cubits, and its height thirty cubits.

(New American Standard Bible)

And this is the fashion which thou shalt make it of: The length of the ark shall be three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits.

(King James Version)