Answer:
12 feet
Step-by-step explanation:
You want the length of the side of a square with a diagonal length of 12√2.
The diagonal of a square is the hypotenuse of a right triangle with equal-length sides. Such an isosceles right triangle has side lengths in the ratio ...
1 : 1 : √2
That is, the hypotenuse is √2 times the side length.
The given hypotenuse is 12√2, so the side length is 12.
Each side of the bedroom is 12 feet.
