The Area of an Ellipse calculator computes the area of an ellipse based on the semi-major (a) and semi-minor (b) axes.
INSTRUCTIONS: Choose units and enter the following:
Area of an Ellipse (A): The calculator returns the area of the ellipse in square meters. The user can automatically convert the square meters to one of many other area units (e.g. square miles) via the pull-down menu next to the resulting answer.
A = π•a•b
In mathematics, an ellipse is a curve in a plane surrounding two focal points such that the sum of the distances to the two focal points is constant for every point on the curve. As such, it is a generalization of a circle, which is a special type of an ellipse having both focal points at the same location. The shape of an ellipse (how "elongated" it is) is represented by its, which for an ellipse can be any number from 0 (the limiting case of a circle to arbitrarily close to but less than 1.
Description of an ellipse is from Wikipedia (en.wikipedia.org/wiki/Ellipse)