Answer:
(a) 33 3/4 ft³
Step-by-step explanation:
You want the volume of a rectangular prism with dimensions 4 1/2 ft, 2 1/2 ft, and 3 ft.
Volume
The volume of a rectangular prism is the product of its length, width, and height. You know how to multiply mixed numbers, so the representation of the dimensions should not be an issue.
V = LWH
V = (4 1/2 ft)(2 1/2 ft)(3 ft) = (9/2)(5/2)(3) ft³ = 135/4 ft³
V = 33 3/4 ft³
The volume of the toy box is 33 3/4 ft³.
