I have this project to do about crosses and I can't think of what the answer is for the following questions: What is the area rule of the crosses (the table below will help you)?
| Cross Number | Area sq cm |
| 1 | 5 |
| 2 | 13 |
| 3 | 25 |
| 4 | 41 |
| 5 | 61 |
I also need to know what the formula is for it?
