Look at the two units of measure below.

1. Which of them would you use to measure the top surface of your desk? Explain your thinking.

   Help (a):

   Since the surface of the top of a desk is flat and not just a straight line, it is a multi-dimensional quantity.

   Answer (a):

   Surface is best measured by square units for surface area.

2. What part(s) of your desk could you measure using the linear unit? Draw a picture and show how that unit could be used.

   Hint (b):

   There are many possible answers. Think about what parts of the desk could be measured with a ruler for possible linear measurements of dimensional values.