The graphs of the following equations divide the $xy$ plane into some number of regions.
$4 + (x + 2)y =x^2$
$(x + 2)^2 + y^2 =16$
Find the area of the second smallest region.
To find the area of the second smallest region formed by the graphs of the equations \(4 + (x + 2)y = x^2\) and \((x + 2)^2 + y^2 = 16\), we need to follow these steps:

1. **Rewrite the equations in a more manageable form:**
   \[
   (x + 2)^2 + y^2 = 16
   \]
   This is the equation of a circle centered at \((-2, 0)\) with radius 4.

   \[
   4 + (x + 2)y = x^2
   \]
   Rearrange this equation:
   \[
   x^2 - (x + 2)y + 4 = 0
   \]

2. **Find the points of intersection:**
   Substitute \(x = 2 - y\) into the circle equation:
   \[
   (2 - y + 2)^2 + y^2 = 16
   \]
   Simplify:
   \[
   (4 - y)^2 + y^2 = 16
   \]
   \[
   16 - 8y + y^2 + y^2 = 16
   \]
   \[
   2y^2 - 8y = 0
   \]
   Factorize:
   \[
   2y(y - 4) = 0
   \]
   So, \(y = 0\) or \(y = 4\).

   For \(y = 0\):
   \[
   x = 2 - 0 = 2
   \]
   Point: \((2, 0)\)

   For \(y = 4\):
   \[
   x = 2 - 4 = -2
   \]
   Point: \((-2, 4)\)

   For \(y = -4\):
   \[
   x = -2
   \]
   Point: \((-2, -4)\)

3. **Verify the points of intersection:**
   The points of intersection are \((-2, -4)\), \((-2, 4)\), and \((2, 0)\).

4. **Determine the regions:**
   The circle and the parabola intersect at three points, dividing the plane into four regions. We need to find the area of the second smallest region.

5. **Calculate the areas:**
   The regions are bounded by segments of the circle and the parabola. We can use integration to find the areas, but we need to identify the regions first.

   The circle equation is:
   \[
   (x + 2)^2 + y^2 = 16
   \]
   The parabola equation is:
   \[
   y = \frac{x^2 - 4}{x + 2}
   \]

   We need to integrate these equations to find the areas of the regions. However, without explicit integration, we can use symmetry and geometric properties to estimate the areas.

6. **Identify the second smallest region:**
   By symmetry, the smallest region is likely the one between \((2, 0)\) and \((-2, 4)\). The second smallest region is likely the one between \((2, 0)\) and \((-2, -4)\).

   The area of the second smallest region can be found by integrating the difference between the circle and the parabola equations over the appropriate interval.

The final answer is the area of the second smallest region, which requires explicit integration to determine. However, based on symmetry and geometric properties, the second smallest region is likely the one between \( \boxed{ (2, 0) } \) and \((-2, -4)\).