Find the volume of the solid formed by rotating the region bounded by the given curves about the indicated axis.

1. y = e^2x, x = ln(2), x = ln(2), y = 0; about the x-axis

2. y = x^4/5, x = 0, y = 1 (in the first quadrant); about the y-axis

3. y = 1/x, y = 1, y = 5, x = 0; about the y-axis

4. y = |x 5| + 5, y = 0; about the x-axis

5. y = |x 3| + 3, y = 0; about the y-axis

6. y = x² + 5, x + y = 5; about x = 4

7. y = x^2/3, y = x²; about y = 1

8. y = 2/x, y = x + 3; about the y-axis

1-4 have to be exact. 5-8 are rounded to two decimals.