3. Find the area bounded by the curves y = e^x + 2, y-axis, y = 1, and the line x = 3.

4. Find the area of the region enclosed by the curves y = 0, y = - x, and y = (2 - x).

5. Find the area of the region bounded by the graphs of f(x) = 2 - x² and g(x) = x.

6. Compute the length of the curve x = 2y3 + 1/(24y) from y = 1 to y = 3.