A sandbox measures 15 ft wide, 20 ft long, and 1 ft tall.

Which is the correct unit of measurement to use when describing the amount of sand that can fill the box?

A.
ft³

B.
ft²

C.
ft

2 answers

length is ft
area is length*width = ft*ft = ft^2
volume is length*width*height = ft*ft*ft = ft^3
thanks