**Find the area of an ellips**

H.Tahsiri

An ellips has a major axis "a" and a minor axis "b" as shown.

I also remember the ellips can be generated by an equation given by

The region D is described as a type dy dx region by:

Its area is therefore

Could I use Mathematic Enter exactly the following expressions into the Mathematica front end and hit the enter key . Magic: Here is the answer.

Another way .