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
length is ft
area is length*width = ft*ft = ft^2
volume is length*width*height = ft*ft*ft = ft^3
thanks
The correct unit of measurement to use when describing the amount of sand that can fill the box is ft³ (cubic feet).
To understand why we need to use cubic feet, let's break down each option:
A. ft³ represents cubic feet, which is a three-dimensional measure of volume. This is the correct unit to use because the sandbox has three dimensions (width, length, and height), and we need to calculate the amount of sand that can fill the entire volume of the box.
B. ft² represents square feet, which is a two-dimensional measure of area. Using square feet wouldn't be appropriate because it only measures the surface area of an object, while we need to know the total volume of the sandbox.
C. ft represents linear feet, which is a one-dimensional measure of length. This unit of measurement wouldn't give us the volume of the sandbox because it only measures length and not height or width.
Therefore, the correct unit to use is ft³ (cubic feet) to describe the amount of sand that can fill the box.