Question

Take a look at this new rectangle. It also has an area of 16 cm
2
, but a width of 4 cm. What is its length?
Area of a
rectangle (cm
2
) Length of a
rectangle (cm)
16 8
16
A rectangle with width labeled 4 cm and length labeled ? cm. The area of 16 sq. cm is written inside the rectangle.

Answer 1

To find the length of the rectangle, you can use the formula for the area of a rectangle, which is:

\[
\text{Area} = \text{Length} \times \text{Width}
\]

In this case, you know the area is 16 cm² and the width is 4 cm. You can set up the equation as follows:

\[
16 = \text{Length} \times 4
\]

Now, solve for the Length:

\[
\text{Length} = \frac{16}{4}
\]
\[
\text{Length} = 4 \, \text{cm}
\]

Thus, the length of the rectangle is **4 cm**.