Answer :
i think you take 51 and divide by 12 bc there are 12 inches in a foot. if that's right then the answer should be 4.25 feet.
A feet is 12 inches.
[tex]51/12=4.25[/tex]
The bookshelf is 4 feet, 3 inches.
[tex]51/12=4.25[/tex]
The bookshelf is 4 feet, 3 inches.