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Practice: Equation of a Sphere

Give the equation of the sphere of center (6,15,11) that touches the 𝑥𝑦-plane.

  • A(𝑥+6)(𝑦15)(𝑧11)=11
  • B(𝑥+6)+(𝑦15)+(𝑧11)=121
  • C(𝑥+6)(𝑦15)(𝑧11)=121
  • D(𝑥+6)+(𝑦15)+(𝑧11)=11

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