481. Twenty Matches. The diagram shown here illustrates how 20 matches, divided into two groups (14 and 6 matches respectively), can be used to form enclosures for two plots, where the first plot has exactly three times the area of the second.

![](https://cdn.mathpix.com/cropped/2024_05_21_56f37ca27ac3d928838dg-174.jpg?height=351&width=780&top_left_y=1184&top_left_x=638)

Now, divide the 20 matches into two groups of 13 and 7 matches respectively, and again use them to enclose two plots, where the area of the first plot is exactly three times the area of the second.
481. The diagram shows how 13 and 7 matches can be used to enclose two areas, with one area being three times larger than the other, as the smaller one contains exactly 5 small triangles, and the larger one 15.

![](https://cdn.mathpix.com/cropped/2024_05_21_56f37ca27ac3d928838dg-324.jpg?height=620&width=560&top_left_y=1729&top_left_x=765)

There are other solutions.