Pie Or Circular Diagrams

A 3-inch-tall rectangular box with a square base is constructed to hold a circular pie that has a diameter of 8 inches. Both are shown below. What is the volume, in cubic inches, of the smallest such box that can hold this pie?

The following table shows the percentage of vehicles passing a signal. Find out the measures of the central angles to show the information by a pie diagram. Hence draw the pie diagram.

Which one of the following is not correct ? The proportion of various items in a pie diagram is proportional to the