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Suppose a white dwarf star has a diameter of approximately 1.6692x10^4 km. Us the formula 4pie^2 to find the approximate surface area of the star

  • math - ,

    surface area= 4 PI * (diameter/2)^2

    where did you get your formula?

  • math - ,

    This is what it said in the book.

    use the formaula

    pie = 3.14

    4pie r ^2

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