Answer:

Explanation:
The volume of rectangular prism is given by :-
, hwre l is the length , w is width and h is height of prism.
The given dimensions of rectangular prism :
Length : 2 ft
Width : 7 ft.
Height : 3.5 ft.
Now, the volume of rectangular prism is given by :-

Hence, the volume of this right rectangular prism =
