The area of the base (floor) is A = 120 square feet.
The height of the bedroom is h = 8 feet.
The formula for the volume of bedroom (right recangular prism) is,
[tex]V=A\cdot h[/tex]Substitute the values in the formula to obtain the volume of bedroom(right recangular prism).
[tex]\begin{gathered} V=120\cdot8 \\ =960 \end{gathered}[/tex]Answer: 960 cubic feet.