Here is a project by realworldmath.org. Real World Math integrates Google Earth with various math topics, this one on Complex Area. Below is a very brief excerpt from their site, but you need to visit the site itself for the full project:
Complex Area Problems – Real World Math
Objectives
•Measure distances
•Find the area of complex polygons
•Solve word problems involving rates
Lesson Description
This lesson consists of two parts. The first requires students to find the area of a complex shape using … the area formulas for a parallelogram and triangle.
The second part … Students will need to be able to solve rate problems with a proportion for this section.
