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

Transition from unit squares to area formula - Answers

1. We can use these expressions to find the area of the rectangle:

2. The equation $6 \, units \times \, 8 \, units \, = \, 48$ square units shows a way to find the area of the rectangle.

3. We can use these expressions to find the area of the rectangle:

4. The expression $5 \times 4$ shows a way to find the area of the rectangle.

5. We can use these expressions to find the area of the rectangle:

6. The equation 9 units $\times 4$ units $=36$ square units shows a way to find the area of the rectangle.

7. We can use these expressions to find the area of the rectangle: