anonymous
  • anonymous
What is the surface area of a sphere with radius of 3.5? A. 12.25p B. 14p C. 24.5p D. 49p
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
do you know formula for calculating surface area of a sphere?
anonymous
  • anonymous
yes but I keep getting 153.94
anonymous
  • anonymous
In all answers there are p, so I guess its \(\pi\)? So you should not write 3.14 instead of it but just keep it.

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anonymous
  • anonymous
this is due today and I have no idea what you just said
anonymous
  • anonymous
write down formula of sphere for me
anonymous
  • anonymous
4 pi r 2
anonymous
  • anonymous
ok so \[S=4\pi r^2=4\pi3.5^2=4\pi12.25=49\pi\] and taht's your answer, its D you don't need to use 3.14 instead of \(\pi\) because no one asked you. 3.14 is just approximation of \(\pi\) and for math you need the most accurate result.
anonymous
  • anonymous
thanks but I found it on yahoo answers
anonymous
  • anonymous
do you understand why its not 153.94?
anonymous
  • anonymous
no but who cares

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