The Lesson
The area of an ellipse is found using the formula:

How to Find the Area of an Ellipse
Finding the area of an ellipse is easy.Question
What is the area of an ellipse with a semi-minor axis of 3 cm and a semi-major axis of 5 cm, as shown below?
Step-by-Step:
1
Start with the formula:
Area = πab
Don't forget: π is pi (≈ 3.14) and πab = π × a × b
2
Substitute the semi-minor and semi-major axis into the formula. In our example, a = 3 and b = 5.
Area = π × 3 × 5 = 47.1 cm2
Answer:
The area of the ellipse with a semi-minor axis of 3 cm and a semi-major axis of 5 cm is 47.1 cm2."Find the Area" Widget


What Is an Ellipse?
An ellipse is a squashed circle. It is symmetrical about its longest axis (called the major axis) and its shortest axis (called the minor axis).
