Finding area between sphere and parabloid

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The discussion focuses on calculating the volume above the sphere defined by the equation x^2+y^2+z^2 = 6 and below the parabloid z = 4-x^2-y^2. A user attempted to solve the problem using a triple integral in cylindrical coordinates, specifying the limits for z, r, and θ. There was a clarification regarding the parameters, confirming that r should range from 0 to √2, θ from 0 to 2π, and z between √(6-r^2) and (4-r^2). The conversation emphasizes the importance of correctly setting up the integral for accurate volume calculation. Proper parameterization is crucial for solving this type of geometric problem.
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Homework Statement


Find the volume above the sphere x^2+y^2+z^2 = 6 and below the parabloid z = 4-x^2-y^2.



Homework Equations





The Attempt at a Solution


I did a triple integral in cylindrical coordinates
Triple Integral: dzdrdθ
where z is between (6-r^2)^(1/2) to (4-r^2) and dr goes from 0 to 2^(1/2) and dθ goes from 0 to 2θ. Are these the proper parameters?
 
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Assuming you meant r, not dr, θ, not dθ, and 2π, not 2θ, yes.
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

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