How can I have 10 trees and plant 5 rows of four?

Arrange as a five-pointed star.

idek

To arrange 10 trees in 5 rows of four, you would need a total of 20 trees. Here's how you can achieve this:

1. Begin by determining the number of trees per row. In this case, you want 4 trees in each row.
2. Multiply the number of trees per row by the number of rows: 4 trees/row * 5 rows = 20 trees.
3. As a result, you need a total of 20 trees to have 5 rows of 4 trees each.

So, to have 10 trees and plant 5 rows of four, you would need to obtain an additional 10 trees to have a total of 20 trees.