Write an entirely new question about a related topic but asks something completely different:

What is the formula to calculate the surface area of a rectangular prism?

A. 2(lwh)
B. lw
C. 24(l^2)
D. l^2

Sure! Here's a new question for you:

How many sides does a regular hexagon have?

A. 4
B. 6
C. 8
D. 10

To find the answer, we need to understand what a regular hexagon is. A regular hexagon is a polygon with six equal sides and six equal angles. To count the sides, you can simply look at the shape and count the number of edges. In this case, a regular hexagon has 6 sides. Therefore, the correct answer is B.

How can you determine the volume of a cylindrical tank?