## How do you integrate with 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 element?**

In any coordinate system it is useful to define a differential area and a differential volume element. In cartesian coordinates the differential area element is simply dA=dxdy (Figure 10.2. 1), and the volume element is simply dV=dxdydz.

### Is triple integral volume?

But triple integrals can be used to 1) find volume, just like the double integral, and to 2) find mass, when the volume of the region we’re interested in has variable density.

**How do you derive the volume of a sphere?**

The sum of the cylindrical elements is 0 to r for a hemisphere. Therefore, the volume of a sphere is x^2 + y^2 = r^2. This video will give you a proper insight on the above derivation. Archimedes first derived the volume of a sphere and that pre-dates calculus by more than a dozen centuries.

#### What is the integral of a sphere?

Because a sphere exists in 3 dimensions, we will have to rotate about an additional axis to get the surface integral. In general φ is used as this additional movement angle. To simplify this; Sphere X 2 + Y 2 + Z 2 = r 2 Can be expressed in terms of constant r , φ, and θ.

**Is spherical geometry a form of Euclidean?**

In Euclidean Geometry, perpendicular lines are formed when two lines are placed perpendicularly to each other. Perpendicular lines form four right angles and intersect at one point. In Spherical Geometry, perpendicular lines form to make eight right angles and intersect at two points.

## What are applications of spherical geometry?

Two practical applications of the principles of spherical geometry are navigation and astronomy. In plane (Euclidean) geometry, the basic concepts are points and (straight) lines.