4. A punch bowl shaped like a hemisphere with a radius of 9 inches is full of punch. If we are filling cylindrical glasses that have a diameter of 3 inches and a height of 3 inches, how many glasses can we fill?

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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
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**Problem 14: Volume Measurements**

A punch bowl shaped like a hemisphere with a radius of 9 inches is full of punch. If we are filling cylindrical glasses that have a diameter of 3 inches and a height of 3 inches, how many glasses can we fill?

**Explanation:**

To solve this problem, we need to calculate the volume of the punch bowl (which is a hemisphere) and the volume of one cylindrical glass. We will then divide the total volume of the punch in the bowl by the volume of one glass to find out how many glasses we can fill.

1. **Volume of the Hemisphere:**

   The volume \( V \) of a hemisphere is given by the formula:
   \[
   V = \frac{2}{3} \pi r^3
   \]
   where \( r \) is the radius of the hemisphere.

   For the punch bowl:
   \[
   r = 9 \, \text{inches}
   \]

   So,
   \[
   V_{\text{hemisphere}} = \frac{2}{3} \pi (9)^3 = \frac{2}{3} \pi (729) = 486 \pi \, \text{cubic inches}
   \]

2. **Volume of One Cylindrical Glass:**

   The volume \( V \) of a cylinder is given by the formula:
   \[
   V = \pi r^2 h
   \]
   where \( r \) is the radius of the base and \( h \) is the height of the cylinder.

   For the cylindrical glass:
   \[
   r = \frac{\text{diameter}}{2} = \frac{3}{2} = 1.5 \, \text{inches}
   \]
   and
   \[
   h = 3 \, \text{inches}
   \]

   So,
   \[
   V_{\text{cylinder}} = \pi (1.5)^2 (3) = \pi (2.25)(3) = 6.75 \pi \, \text{cubic inches}
   \]

3. **Number of Glasses Filled:**

   To find out how many cylindrical glasses we can fill, divide the volume of the punch in the bowl by the volume of one glass:
   \[
   \frac{V_{\
Transcribed Image Text:**Problem 14: Volume Measurements** A punch bowl shaped like a hemisphere with a radius of 9 inches is full of punch. If we are filling cylindrical glasses that have a diameter of 3 inches and a height of 3 inches, how many glasses can we fill? **Explanation:** To solve this problem, we need to calculate the volume of the punch bowl (which is a hemisphere) and the volume of one cylindrical glass. We will then divide the total volume of the punch in the bowl by the volume of one glass to find out how many glasses we can fill. 1. **Volume of the Hemisphere:** The volume \( V \) of a hemisphere is given by the formula: \[ V = \frac{2}{3} \pi r^3 \] where \( r \) is the radius of the hemisphere. For the punch bowl: \[ r = 9 \, \text{inches} \] So, \[ V_{\text{hemisphere}} = \frac{2}{3} \pi (9)^3 = \frac{2}{3} \pi (729) = 486 \pi \, \text{cubic inches} \] 2. **Volume of One Cylindrical Glass:** The volume \( V \) of a cylinder is given by the formula: \[ V = \pi r^2 h \] where \( r \) is the radius of the base and \( h \) is the height of the cylinder. For the cylindrical glass: \[ r = \frac{\text{diameter}}{2} = \frac{3}{2} = 1.5 \, \text{inches} \] and \[ h = 3 \, \text{inches} \] So, \[ V_{\text{cylinder}} = \pi (1.5)^2 (3) = \pi (2.25)(3) = 6.75 \pi \, \text{cubic inches} \] 3. **Number of Glasses Filled:** To find out how many cylindrical glasses we can fill, divide the volume of the punch in the bowl by the volume of one glass: \[ \frac{V_{\
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