# How do you find the volume of a ellipsoid?

## How do you find the volume of a ellipsoid?

We can calculate the volume of an elliptical sphere with a simple and elegant ellipsoid equation: Volume = 4/3 * π * A * B * C , where: A, B, and C are the lengths of all three semi-axes of the ellipsoid.

How do you convert a triple integral to spherical coordinates?

To evaluate a triple integral in spherical coordinates, use the iterated integral ∫θ=βθ=α∫ρ=g2(θ)ρ=g1(θ)∫u2(r,θ)φ=u1(r,θ)f(ρ,θ,φ)ρ2sinφdφdρdθ.

How do you find the volume of an ellipsoid using polar coordinates?

The polar equation relative to its center of an ellipse in standard position is ρ=ab√(bcosΦ)2+(asinΦ)2. Each horizontal slice of the ellipsoid must be scaled by a factor of √1−z2/c2, therefore ρ ranges from 0 to ab√1−z2/c2√(bcosΦ)2+(asinΦ)2.

### What is the equation of an ellipsoid?

ellipsoid, closed surface of which all plane cross sections are either ellipses or circles. An ellipsoid is symmetrical about three mutually perpendicular axes that intersect at the centre. If a, b, and c are the principal semiaxes, the general equation of such an ellipsoid is x2/a2 + y2/b2 + z2/c2 = 1.

How do you convert to spherical coordinates?

To convert a point from Cartesian coordinates to spherical coordinates, use equations ρ2=x2+y2+z2,tanθ=yx, and φ=arccos(z√x2+y2+z2).

How do you calculate dV in spherical coordinates?

What is dV is Spherical Coordinates? Consider the following diagram: We can see that the small volume ∆V is approximated by ∆V ≈ ρ2 sinφ∆ρ∆φ∆θ. This brings us to the conclusion about the volume element dV in spherical coordinates: Page 5 5 When computing integrals in spherical coordinates, put dV = ρ2 sinφ dρ dφ dθ.

#### How is ellipsoid formed?

Flattening, also called ellipticity and oblateness, is a measure of the compression of a circle or sphere along a diameter to form an ellipse or an ellipsoid of revolution (spheroid), respectively.

How do you Parametrize an ellipsoid in spherical coordinates?

If you want to use spherical coordinates, you need to parameterize r as a function of θ and ϕ. Given an angle pair (θ,ϕ) the above equation will give you the distance from the center of the ellipsoid to a point on the ellipsoid corresponding to (θ,ϕ).

Under what conditions is an ellipsoid a sphere?

If the three axes have the same length, the ellipsoid is a sphere.

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