Consider the following two solids: i) the ball of radius 3 centered at the origin and ii) the cone defined by the condition ø < ™/6 where ø is the spherical coordinate with the same symbol. Their intersection looks like an ice-cream cone. Use integration with spherical coordinates in order to compute the volume of this intersection.

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**Problem Statement: Volume Intersection Using Spherical Coordinates**

**Concept Overview:**

Consider the following two solids:
1. A ball of radius 3 centered at the origin.
2. A cone defined by the condition \( \phi \leq \pi/6 \), where \( \phi \) is the spherical coordinate of the same symbol.

The intersection of these two solids resembles an ice-cream cone.

**Objective:**

Use integration with spherical coordinates to compute the volume of this intersection.

**Explanation and Steps:**

To solve this problem, we need to understand the spherical coordinate system, where:
- \( \rho \) (rho) is the radial distance from the origin.
- \( \phi \) (phi) is the angle from the positive z-axis.
- \( \theta \) (theta) is the azimuthal angle in the xy-plane from the positive x-axis.

**Integration Setup:**

For the specified solids:
- The radial distance \(\rho\) will vary from 0 to 3.
- The angle \(\phi\) will vary from 0 to \(\pi/6\).
- The angle \(\theta\) will vary from 0 to \(2\pi\) to cover the entire circular symmetry of the cone.

The volume element in spherical coordinates is given by:
\[ dV = \rho^2 \sin(\phi) \, d\rho \, d\phi \, d\theta \]

**Volume Calculation:**

The integral for the volume \( V \) can be set up as:
\[ V = \int_{\theta=0}^{2\pi} \int_{\phi=0}^{\pi/6} \int_{\rho=0}^{3} \rho^2 \sin(\phi) \, d\rho \, d\phi \, d\theta \]

By evaluating the above integral, one can compute the volume of the intersection that resembles an ice-cream cone.

**Conclusion:**

This method uses the principles of spherical coordinates to accurately determine the volume of the complex intersection between a sphere and a cone, demonstrating the power of integration in solving geometric problems.
Transcribed Image Text:**Problem Statement: Volume Intersection Using Spherical Coordinates** **Concept Overview:** Consider the following two solids: 1. A ball of radius 3 centered at the origin. 2. A cone defined by the condition \( \phi \leq \pi/6 \), where \( \phi \) is the spherical coordinate of the same symbol. The intersection of these two solids resembles an ice-cream cone. **Objective:** Use integration with spherical coordinates to compute the volume of this intersection. **Explanation and Steps:** To solve this problem, we need to understand the spherical coordinate system, where: - \( \rho \) (rho) is the radial distance from the origin. - \( \phi \) (phi) is the angle from the positive z-axis. - \( \theta \) (theta) is the azimuthal angle in the xy-plane from the positive x-axis. **Integration Setup:** For the specified solids: - The radial distance \(\rho\) will vary from 0 to 3. - The angle \(\phi\) will vary from 0 to \(\pi/6\). - The angle \(\theta\) will vary from 0 to \(2\pi\) to cover the entire circular symmetry of the cone. The volume element in spherical coordinates is given by: \[ dV = \rho^2 \sin(\phi) \, d\rho \, d\phi \, d\theta \] **Volume Calculation:** The integral for the volume \( V \) can be set up as: \[ V = \int_{\theta=0}^{2\pi} \int_{\phi=0}^{\pi/6} \int_{\rho=0}^{3} \rho^2 \sin(\phi) \, d\rho \, d\phi \, d\theta \] By evaluating the above integral, one can compute the volume of the intersection that resembles an ice-cream cone. **Conclusion:** This method uses the principles of spherical coordinates to accurately determine the volume of the complex intersection between a sphere and a cone, demonstrating the power of integration in solving geometric problems.
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