A child's sandbox is 5 feet wide, 4 feet long, and 3 feet deep. Grace fills the sandbox so that the sand is 2 ½ feet deep. What is the volume of the sand in the box?

the volume of sand is

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes, rectangular prism.

Given data

if the sandbox is filled with sand of deep the volume of the sand in the box will be calculated based on the the depth of the sand

converting the depth of sand from mixed fraction to proper fraction we have

the expression for the volume of a rectangular prism is

substituting our data into the expression we have

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents