Units of measurement are very important when we want to find out how much space an object takes up, either in area or volume. Let’s break this down simply:

1. Calculating Area:

   • For rectangles, we figure out the area by using this equation:
   • Area (A) = length × width.
   • If the length is in meters and the width is in centimeters, we need to change them to the same unit. This way, our answer will be correct!

2. Calculating Volume:

   • For things like a prism, the volume can be found with this formula:
   • Volume (V) = base area × height.
   • Just like before, if we use different units, our volume will not be right.

3. Example:

   • Let’s say we have a rectangle that is 5 meters long and 200 centimeters wide.
   • First, we need to change 200 centimeters into meters.
   • 200 cm is equal to 2 meters.

   Now, we can find the area:

   • A = 5 m × 2 m = 10 m².

Always remember to keep your units the same. This will help you get the right answers!