document.write( "Question 1181724: 17. Find the volume of the largest right circular cylinder of altitude 8 in. that can be cut from a sphere of diameter 12 in. \n" ); document.write( "
Algebra.Com's Answer #849976 by CPhill(1959)\"\" \"About 
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Here's how to find the volume of the largest cylinder:\r
\n" ); document.write( "\n" ); document.write( "**1. Visualize the Setup:** Imagine a sphere with a cylinder inside it. The cylinder's height is fixed at 8 inches, and we want to find the largest possible radius for the cylinder.\r
\n" ); document.write( "\n" ); document.write( "**2. Key Dimensions:**\r
\n" ); document.write( "\n" ); document.write( "* Sphere diameter = 12 inches, so sphere radius (R) = 6 inches.
\n" ); document.write( "* Cylinder height (h) = 8 inches.
\n" ); document.write( "* Let 'r' be the radius of the cylinder.\r
\n" ); document.write( "\n" ); document.write( "**3. Cross-Section:** A cross-section through the center of the sphere and cylinder reveals a circle (the sphere) with a rectangle (the cylinder) inside. The diagonal of this rectangle is the diameter of the sphere (12 inches).\r
\n" ); document.write( "\n" ); document.write( "**4. Pythagorean Theorem:** We can use the Pythagorean theorem to relate the sphere's radius (R), the cylinder's radius (r), and *half* of the cylinder's height (h/2):\r
\n" ); document.write( "\n" ); document.write( "R² = r² + (h/2)²\r
\n" ); document.write( "\n" ); document.write( "**5. Solve for the Cylinder's Radius (r):**\r
\n" ); document.write( "\n" ); document.write( "6² = r² + (8/2)²
\n" ); document.write( "36 = r² + 16
\n" ); document.write( "r² = 20
\n" ); document.write( "r = √20 = 2√5 inches\r
\n" ); document.write( "\n" ); document.write( "**6. Volume of the Cylinder:**\r
\n" ); document.write( "\n" ); document.write( "Volume of a cylinder = πr²h
\n" ); document.write( "V = π(2√5)² * 8
\n" ); document.write( "V = π * 20 * 8
\n" ); document.write( "V = 160π cubic inches\r
\n" ); document.write( "\n" ); document.write( "**Therefore, the volume of the largest right circular cylinder is 160π cubic inches, or approximately 502.65 cubic inches.**
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