Area of Rectangles

Area is the measurement indicating how much space on a plane is taken up by a two-dimensional shape. While perimeter is measured in units of length, area is measured in square units. We will discuss units of measurement in more detail in the next section. Watch this lecture series about calculating the area of rectangles, and complete the interactive exercises.

Practice

Area of rectangles with partial arrays - Answers

1. \text { Area }=21 \text { square units }

2. We would use the same number of unit squares to cover this rectangle, so it would have the same area:



3. \text { Area }=42 \text { square units }

4. \text { Area }=30 \text { square units }

5. We would use the same number of unit squares to cover this rectangle, so it would have the same area:



6. \text { Area }=28 \text { square units }

7.  \text { Area }=32 \text { square units }