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Calculus

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Can someone please tell me how to derive V=4/3pi(r)^3 to get x^2+y^2=r^2?

  • Calculus -

    You can derive the formula for the volume of a sphere by rotating the circle
    x^2 + y^2 = r^2 about the x axis by taking the
    integral of pi(r^2 - x^2)dx from -r to +r

    Is this what you meant?

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