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

Answer 1

To find the length of the rectangle with an area of 16 cm² and a width of 4 cm, you can use the formula for the area of a rectangle:

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

Given that the area is 16 cm² and the width is 4 cm, you can substitute these values into the formula:

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

Now, to find the length, divide both sides by 4:

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

Thus, the length of the rectangle is 4 cm.

Here's the completed table including this new rectangle:

| Area of a rectangle (cm²) | Length of a rectangle (cm) |
|----------------------------|-----------------------------|
| 16 | 8 |
| 16 | 4 |