# How do you find the volume of a sphere using triple integrals?

## How do you find the volume of a sphere using triple integrals?

Finding volume for triple integrals using spherical coordinates

1. V = ∫ ∫ ∫ B f ( x , y , z ) d V V=\int\int\int_Bf(x,y,z)\ dV V=∫∫∫B​f(x,y,z) dV.
2. where B represents the solid sphere and d V dV dV can be defined in spherical coordinates as.
3. d V = ρ 2 sin d ρ d θ d ϕ dV=\rho^2\sin\ d\rho\ d\theta\ d\phi dV=ρ2​sin dρ dθ dϕ

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

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 a sphere using an integral?

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1. Compute the volume of a sphere of radius r using an integral. SOLUTION. The sphere of radius r can be obtained rotating the half circle graph of the function y = √ r − x2, x ∈ [−r, r]. about the x-axis. The volume V is obtained as follows: V = ∫ r.
2. −r.
3. π( √ r2 − x2)2 dx = 2. ∫ r.
4. π(r2 − x2)dx = (4/3)πr3.

What is the triple integral of a volume?

Let D be a closed, bounded region in space. Let a and b be real numbers, let g1(x) and g2(x) be continuous functions of x, and let f1(x,y) and f2(x,y) be continuous functions of x and y. The volume V of D is denoted by a triple integral, V=∭DdV. ∫ba∫g2(x)g1(x)∫f2(x,y)f1(x,y)dzdydx=∫ba∫g2(x)g1(x)(∫f2(x,y)f1(x,y)dz)dydx.

What is volume of the sphere?

The formula for the volume of a sphere is V = 4/3 πr³.

## What is the volume of a unit sphere?

V = 4π r 3 / 3
The volume is V = 4π r 3 / 3 for the three-dimensional ball of radius r.

### How do you convert spherical integrals?

To convert a point from cylindrical coordinates to spherical coordinates, use equations ρ=√r2+z2,θ=θ, and φ=arccos(z√r2+z2).

#### Why is the volume of a sphere 4 3?

Since the cylinder/cone and hemisphere have the same height, by Cavalieri’s Principle the volumes of the two are equal. The cylinder volume is πR3, the cone is a third that, so the hemisphere volume is 23πR3. Thus the sphere of radius R has volume 43πR3.

Is volume integral and triple integral same?

Triple integral and volume is the same . Basically integral is used to measure area under curve whether open or bounded. Volume integral is a particular case of Triple integral. Triple integral is used to find the volume of 3-dimensional object .

Why is sphere volume formula?

If we observe a sphere, we can see that the height is equal to the sphere’s diameter. Therefore, h = 2r. Putting the value of h in the final equation, we get, Vsphere = ⅔ 𝜋r2 (2r) = 4/3 𝜋 r3, which is the volume of a sphere.

## How do you find the volume of a spherical shell?

Volume of material used for spherical shell=43π(R3−r3)

### Why is it 4 3 for volume of a sphere?

Volume of a sphere = 4/3 πr3 If you consider a circle and a sphere, both are round. The difference between the two shapes is that a circle is a two-dimensional shape and a sphere is a three-dimensional shape which is the reason that we can measure the Volume and area of a Sphere.

#### What is the formula for finding spheres volume?

If you know the volume. Note Most calculators don’t have a cube root button.

• Interesting fact. For a given surface area,the sphere is the one solid that has the greatest volume.
• Things to try. In the figure above,click “hide details”. Drag the orange dot to resize the sphere. Click “show details” to check your answer.
• What is the formula of a sphere 4 volume?

Thus, the volume can be written as the product of the area of the circle and its thickness dy. Also, the radius of the circular disc “r” can be expressed in terms of the vertical dimension (y) using the Pythagoras theorem. Thus, the dimensional formula of volume of the sphere is V = 4 3πR3 V = 4 3 π R 3 cubic units.

How can Pi find the volume of a sphere?

Step#1: Enter the value of radius.

• Step#2: Choose the value of radius as Centimeters,meters or millimeters.
• Step#3: Click on “CALCULATE” button.
• ## What is the equation of a sphere?

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