Find the volume of the solid obtained by rotating the region-2

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SUMMARY

The discussion focuses on calculating the volume of a solid obtained by rotating the region bounded by the curves \( y = \sqrt{25 - x^2} \), \( y = 0 \), \( x = 2 \), and \( x = 4 \) about the x-axis. Participants emphasize the importance of sketching the region and the solid, as well as visualizing the typical disk or washer used in the volume calculation. The user seeks guidance on how to apply the disk method effectively for this specific problem.

PREREQUISITES
  • Understanding of the disk method for volume calculation
  • Familiarity with the equations of curves in Cartesian coordinates
  • Basic knowledge of integral calculus
  • Ability to sketch graphs of functions and solids of revolution
NEXT STEPS
  • Study the disk method for calculating volumes of solids of revolution
  • Learn how to set up integrals for volume calculations using the formula \( V = \pi \int_{a}^{b} [f(x)]^2 \, dx \)
  • Explore examples of volume calculations involving curves similar to \( y = \sqrt{25 - x^2} \)
  • Practice sketching regions and solids of revolution for better visualization
USEFUL FOR

Students in calculus courses, educators teaching volume calculations, and anyone interested in mastering the disk method for solids of revolution.

phillyolly
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Homework Statement


Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line. Sketch the region, the solid, and a typical disk or washer. About x axis.

y=sqrt(25-x2)
y=0
x=2
x=4

Homework Equations





The Attempt at a Solution


I drew a graph, region and solid. Please help me out with the disk.
Jump start for any solution, please?
 

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I posted this in your other thread, here's the link: https://www.physicsforums.com/showthread.php?t=418382"

This figure should give you some intuition on visualizing the disks.

I don't really understand where your confusion lies, so if there is any please specify where and why.
 
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