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mymathcourses

  • 2 years ago

Find the area of the part of cylinder x^2 + y^2 = 2ay that lies outside the cone z^2 = x^2 + y^2.

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  1. mymathcourses
    • 2 years ago
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    @TuringTest Hi do you know how to do this question? thx a lot!

  2. TuringTest
    • 2 years ago
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    I'm a little unsure I did this right, do you know the answer?

  3. TuringTest
    • 2 years ago
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    |dw:1352831101743:dw|convert this to polar coordinates

  4. mymathcourses
    • 2 years ago
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    @TuringTest the answer is 16a^2

  5. mymathcourses
    • 2 years ago
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    i always got 8a^2, what i did is like using dS=zds and then use polar coordinates integrate from 0 to pi/2 and i got 4a^2 then multiply 2, so finally got 8a^2

  6. mymathcourses
    • 2 years ago
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    and the graph for cylinder should be at the positive x axis

  7. TuringTest
    • 2 years ago
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    I seem to be messing this one up... I'll let you know if I make any progress.

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