Find Volume Inside x^2+y^2+z^2=4 and (x+2)^2+(y-1)^2+(z+2)^2=4

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D is the region of intersection, which can be found by solving for x and y in the system of equations.In summary, to find the volume inside both x^2+y^2+z^2=4 and (x+2)^2+(y-1)^2+(z+2)^2=4, you must first find the region of intersection by setting the two equations equal to each other and solving for x and y. Then, the volume can be calculated by integrating the difference between the two equations over the region of intersection. The bounds for the integral can be determined by solving for x and y in the system of equations.
  • #1
real10
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x^2+y^2+z^2=4
(x+2)^2+(y-1)^2+(z+2)^2=4

find volume inside both.
thanks,
 
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  • #2
Just draw and integrate.You will get
[tex]\frac{11 \pi}{12}[/tex]
 
  • #3
i meant the volume of intersection due to those spheres.(common to both)
any details like what are the bounds for the integral u set up and which one..

thanks again,
 
  • #4
I may be wrong, but try to find the region first by setting both equations equal. The "height" of each point in the intersection will be equal to the first equation minus the second.

[tex]z_1=\sqrt{2-x^2-y^2}[/tex]

[tex]z_2=\sqrt{4-(x+2)^2-(y-1)^2}-2[/tex]

[tex]V=\iint\limits_{D}\left(z_1-z_2\right)dA[/tex]
 

1. What is the equation for the given surface?

The given surface is represented by the equations x^2+y^2+z^2=4 and (x+2)^2+(y-1)^2+(z+2)^2=4.

2. What does the equation represent?

The equation represents a sphere with a radius of 2 centered at the origin for the first equation, and a sphere with a radius of 2 centered at (-2,1,-2) for the second equation.

3. How do you find the volume inside the given surface?

To find the volume inside the surface, you can use the formula V = (4/3)πr^3, where r is the radius of the sphere. In this case, the radius is 2, so the volume would be (4/3)π(2)^3 = 32/3π.

4. What is the significance of the two equations?

The two equations represent two intersecting spheres, with the first one centered at the origin and the second one centered at (-2,1,-2). The intersection of these two spheres creates a unique shape, and finding the volume inside this shape can have practical applications in fields such as physics and engineering.

5. Can the equations be solved for specific values of x, y, and z?

Yes, the equations can be solved for specific values of x, y, and z. For example, if we set x = 0, y = 0, and z = 2, we get a point on the surface of the first sphere. Similarly, if we set x = -2, y = 1, and z = -2, we get a point on the surface of the second sphere. This shows that the equations represent points on the respective spheres and can be solved for specific values of x, y, and z.

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