Answer:
She needs to fill ft³ in order to fill the sandbox completely.
Step-by-step explanation:
length = = feet
width = 5 feet
depth = feet
Sandbox is just like a rectangular prism. In order to fill the sandbox completely, we need to determine the volume.
Thus, the formula to find the volume of a rectangular prism can be computed using the formula
ft³
Thus, she needs to fill ft³ in order to fill the sandbox completely.