Find Volume Using Cylindrical Coordinates

In summary, cylindrical coordinates are a type of coordinate system that includes a radius, angle, and height component to locate points in three-dimensional space. To find the volume using cylindrical coordinates, one would use the formula V = ∫∫∫ r dz dr dθ and integrate over the specified region. The advantages of using cylindrical coordinates include simplifying integrals and being useful for objects with rotational symmetry. However, limitations include not being suitable for all shapes and potentially being more difficult to set up the integral. Real-world applications include engineering, physics, and architecture for calculating volume of objects and determining fluid displacement.
  • #1
bodensee9
178
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Can someone explain to me how to find the volume of the following? I am asked to use cylindrical coordinates to find the volume of the solid enclosed by the sphere r^2+a^2 = a^2 and by the cone z = r cot φ where φ is some fixed angle between 0 and pi/2?

I would have thought that the volume would be ∫∫∫zrdrdθ, where z runs between r*cot φ and √(a^2-r^2), r runs between 0 to a/csc φ, and θ runs from 0 to 2pi. Thanks!
 
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  • #2
Never mind, figured it out. Thanks.
 

Related to Find Volume Using Cylindrical Coordinates

What is cylindrical coordinates?

Cylindrical coordinates are a type of coordinate system used to locate points in three-dimensional space. It includes a radius, an angle, and a height component.

How do you find the volume using cylindrical coordinates?

To find the volume using cylindrical coordinates, you would use the formula V = ∫∫∫ r dz dr dθ, where r is the radius, dz is the height, dr is the change in radius, and dθ is the change in angle. This involves integrating over the specified region in the coordinate system.

What are the advantages of using cylindrical coordinates to find volume?

Cylindrical coordinates are particularly useful for finding the volume of objects with rotational symmetry, such as cylinders and cones. They also simplify the calculation of integrals in certain situations, making it easier to find the volume of complex shapes.

What are the limitations of using cylindrical coordinates to find volume?

Cylindrical coordinates are not suitable for every shape, as they are limited to objects with rotational symmetry. In some cases, it may be more difficult to set up the integral in cylindrical coordinates compared to other coordinate systems.

What are some real-world applications of finding volume using cylindrical coordinates?

Finding volume using cylindrical coordinates has many practical applications, such as in engineering, physics, and architecture. It can be used to calculate the volume of objects like pipes, cylinders, and cones, as well as to determine the displacement of fluid in a tank or container.

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