The ratio of the length of a side of a square to its perimeter is **1:4**. Therefore, any ratio that is not equivalent to 1:4 is a wrong answer. For example, 2:8 is equivalent to 1:4, but 3:8 is not.
| Side length | Perimeter | Ratio |
| ----------- | --------- | ----- |
| 2 cm | 8 cm | 2:8 |
| 3 cm | 12 cm | 3:12 |
| 4 cm | 16 cm | 4:16 |
| 5 cm | 20 cm | 5:20 |
Part A: Click the wrong answers.
The wrong answers are **3:12** and **5:20**, because they are not equivalent to 1:4.
Part B: Drag numbers into each box to produce the correct answers. Place the smaller number in the box on the left.
To produce the correct answers, we need to find two numbers that have a ratio of 1:4. For example, we can use 1 and 4, or 2 and 8, or 3 and 12, etc.
| Side length | Perimeter | Ratio |
| ----------- | --------- | ----- |
| [ ] cm | [ ] cm | [ ]:[ ]|
| [ ] cm | [ ] cm | [ ]:[ ]|
One possible way to fill in the blanks is:
| Side length | Perimeter | Ratio |
| ----------- | --------- | ----- |
| [1] cm | [4] cm | [1]:[4]|
| [2] cm | [8] cm | [2]:[8]|
Another possible way is:
| Side length | Perimeter | Ratio |
| ----------- | --------- | ----- |
| [3] cm | [12] cm | [3]:[12]|
| [4] cm | [16] cm | [4]:[16]|
There are other possible ways as well, as long as the ratio is equivalent to 1:4.