anonymous
  • anonymous
21.) The volume of a sphere is 4000pi m^3. What is the surface area of the sphere to the nearest square meter? my answer: 2,614 m^2. Is that correct? 22.) Determine whether the two figures are similar. If so, give the scale factor of the smaller figure to the larger figure.
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
my answer: yes, 1:6. Is that correct?
anonymous
  • anonymous

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jim_thompson5910
  • jim_thompson5910
I agree with 21
jim_thompson5910
  • jim_thompson5910
now I'm checking 22
anonymous
  • anonymous
Okay.
jim_thompson5910
  • jim_thompson5910
22 looks good too
anonymous
  • anonymous
Thank ya.
jim_thompson5910
  • jim_thompson5910
np
wolf1728
  • wolf1728
Sphere Volume = 4/3 * PI * r^3 r^3 = Sphere Volume / (4/3)*pi r^3 = 4,000 / (4/3) r^3 = 3,000 r = 14.4224957031 Sphere Area = 4 * pi * r^2 Sphere Area = 4 * pi * 14.4224957031^2 Sphere Area = 2,613.9104229403 Yes, 2,614 is correct
anonymous
  • anonymous
thanks wolf :))
wolf1728
  • wolf1728
u r welcome LollyGirl :-)

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