Hello, Raleigh!

38. A square fits just inside a circle whole radius is

There is second square that fits around that circle

and a second circle around the second square.

What is the radius of the second circle? Are they trying to be funny? . . . That first square is irrelevant!

Code:

* - - * - * - * - - * B
| * */ | _
|* R / *| 3√2
| / |
* / *
* * - - - - * A
* O 3√2 *
| |
|* *|
| * * |
* - - * - * - * - - *

The radius of the first circle is: .

The radius of the second circle is: .

We have a 45° right triangle.

. .

Therefore: .