Surface area inside an elliptic cylinder

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SUMMARY

The discussion focuses on calculating the surface area of the section of the plane defined by the equation 8x + 3y + z = 9 that is contained within the elliptic cylinder described by the equation (x^2/64) + (y^2/9) = 1. Participants suggest using the concept of projection to relate the elliptic cylinder to the plane, specifically recommending the division of the base area of the cylinder by the cosine of the angle between the plane and the horizontal. This approach provides a clear method for determining the surface area in question.

PREREQUISITES
  • Understanding of surface area calculations in multivariable calculus
  • Familiarity with the equations of planes and elliptic cylinders
  • Knowledge of projection concepts in geometry
  • Ability to perform parametrization of regions
NEXT STEPS
  • Study the method of calculating surface areas using projections in multivariable calculus
  • Learn about parametrization techniques for surfaces
  • Explore the geometric properties of elliptic cylinders
  • Investigate the relationship between planes and their projections onto cylindrical surfaces
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Students in multivariable calculus, educators teaching geometry, and anyone involved in mathematical modeling of surfaces and volumes.

MasterWu77
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Homework Statement



Find the surface area of that part of the plane 8x+3y+z=9 that lies inside the elliptic cylinder (x^2/64) + (y^2/9) =1

Homework Equations



not sure what equations i need to use. probably parametrization of a region

The Attempt at a Solution



i'm not quite sure how to start this problem. how do i related the elliptic cylinder with the plane?
 
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Hi MasterWu77! :smile:

You could just say it's a projection, and divide the base area of the cylinder by the appropriate cosine. :wink:
 
ok but how would i say that it is a projection and what exactly do you mean by the appropriate cosine?
 

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