anonymous
  • anonymous
Find the length of the diameter of a sphere with a surface area of 804.25. A. 12 B. 4 C. 8 D. 16
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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amistre64
  • amistre64
do we have a formula for surface area?
anonymous
  • anonymous
4 pi r^2
amistre64
  • amistre64
good, then if we rearrange that to get the "r" all by itself then we can determine the diameter of the sphere; since diam is twice r

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amistre64
  • amistre64
Sa = 4pi r^2 Sa/4pi = r^2 sqrt(Sa/4pi) = r 2*sqrt(Sa/4pi) = 2*r = diameter
amistre64
  • amistre64
i believe thats about the sqrt of 225; so its a little bigger than 15
anonymous
  • anonymous
one question is a cone a sphere?
amistre64
  • amistre64
a cone is a cone; and a sphere is a sphere.
anonymous
  • anonymous
thanks

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