When did the United States first start to consider adopting the metric system?

1866

In 1866, the U.S. Congress authorized the use of the metric system and almost a decade later America became one of 17 original signatory nations to the Treaty of the Meter. A more modern system was approved in 1960 and is commonly known as SI or the International System of Units.

30.25 (or 95.03)

Step-by-step explanation:

Circle Area Formula (r = radius):

The radius is half of the diameter, so in this case it is 5.5.

is 30.25 so then you add the pi symbol again for it to be 30.25.