Home Back

Area of Ellipse given Eccentricity and Semi Major Axis Calculator

Area of Ellipse Formula:

\[ A = \pi \cdot a^2 \cdot \sqrt{1 - e^2} \]

m
(unitless)

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is the Area of Ellipse Formula?

The area of an ellipse can be calculated using the formula that involves the semi-major axis and eccentricity. This formula provides the total area enclosed by the elliptical boundary.

2. How Does the Calculator Work?

The calculator uses the ellipse area formula:

\[ A = \pi \cdot a^2 \cdot \sqrt{1 - e^2} \]

Where:

Explanation: The formula calculates the area by considering the elliptical shape's major axis and how elongated it is (eccentricity).

3. Importance of Ellipse Area Calculation

Details: Calculating the area of an ellipse is important in various fields including astronomy, engineering, architecture, and physics where elliptical shapes are commonly encountered.

4. Using the Calculator

Tips: Enter the semi-major axis in meters and eccentricity (must be between 0 and 1). Both values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the range of eccentricity for an ellipse?
A: The eccentricity of an ellipse ranges from 0 (a circle) to values approaching but not reaching 1 (highly elongated ellipse).

Q2: How does eccentricity affect the area?
A: For a fixed semi-major axis, as eccentricity increases, the area decreases because the ellipse becomes more elongated.

Q3: What is the relationship between this formula and the standard ellipse area formula?
A: The standard formula A = πab can be derived from this one using the relationship b = a√(1-e²), where b is the semi-minor axis.

Q4: Can this formula be used for circles?
A: Yes, when eccentricity is 0, the formula simplifies to A = πa², which is the area of a circle with radius a.

Q5: What are practical applications of ellipse area calculations?
A: Used in orbital mechanics, architectural design, optical systems, and any application involving elliptical shapes or orbits.

Area of Ellipse given Eccentricity and Semi Major Axis Calculator© - All Rights Reserved 2025