Draw an irregular shape
on a piece of paper. Choose some point inside the shape
and call that the "center."
Find the lengths from the
center to different points on the edge of
the shape. [If a segment goes outside the shape, add
the lengths of the pieces that are inside the shape.]
Find the average
of all the lengths.
Let this average be the "radius" of the
shape. Use the formula for the areas of a circle (
radius, or about 3.14
r). This should be a good estimate of the