In geometry, a common standard setting for enlarging on a copy machine is 121 percent. What does this mean?

the image produced is 21% larger than the original. Usually used to enlarge from legal (8.5x14) to 11x17 (double letter) size.

When enlarging on a copy machine, the setting of 121 percent means that the resulting copy will be 121% of the original size. In other words, it will be slightly larger than the original. For example, if the original size is 10 cm, then enlarging it by 121% will make the copy 12.1 cm.

When enlarging on a copy machine, a standard setting of 121 percent means that the output copy will be 121 percent of the original size. In other words, if you copy a document using this setting, the resulting copy will be slightly larger than the original by 21 percent.

To understand how to calculate this, we can use the concept of percent or percentage. Percentages are a way of expressing a proportion or ratio out of 100. For example, if we say 50 percent, it means 50 out of 100. Similarly, 100 percent means the full amount or the whole.

To calculate the enlargement, you can use the following formula:

Enlarged size = Original size + (Original size × Percentage increase/100)

In this case, the original size is 100 percent, and the percentage increase is 21 percent. So, the calculation would be:

Enlarged size = 100 percent + (100 percent × 21 percent/100)
Enlarged size = 100 percent + (100 percent × 0.21)
Enlarged size = 100 percent + 21 percent
Enlarged size = 121 percent

Therefore, a copy machine set to enlarge at 121 percent will produce copies that are 121 percent of the original size.