The circle `(x-a)^2+(y-a)^2=a^2` is rolled on the y-axis in the positive direction through one complete revolution. Find the equation of the circle in its new-position.

Explanation

To find the equation of the circle after it has rolled on the y-axis through one complete revolution, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Original Circle's Equation:**
The original equation of the circle is given by:
\[
(x - a)^2 + (y - a)^2 = a^2
...