anonymous
  • anonymous
20.) What is the volume of the sphere? Round the answer to the nearest cubic unit. http://assets.openstudy.com/updates/attachments/55bff878e4b03325500374c7-lollygirl217-1438675119264-as.jpg my answer: 2145 cm^3. Is that correct? 24.) What is the scale factor of a cube with volume 1331 ft^3 to a cube with volume 85184ft^3? my answer: 4:1. Is that correct?
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous

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anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
yes they are correct
anonymous
  • anonymous
you sure?
anonymous
  • anonymous
yes use the formula for a sphere do u know it?
anonymous
  • anonymous
i basically guessed on both of them
anonymous
  • anonymous
lucky guesses then
anonymous
  • anonymous
*sigh* okie lemee show me steps
anonymous
  • anonymous
\[V =\frac{ 4 }{ 3 }\pi r^3\]
anonymous
  • anonymous
this is the formula
anonymous
  • anonymous
now in your diagram the diameter is 16 which means the radius=diameter/2=8
anonymous
  • anonymous
Now plug it into the formula \[V=\frac{ 4 }{ 3 }\pi 8^3\]=2144.66058485cm^3
anonymous
  • anonymous
and round that to 2145 cm^3
anonymous
  • anonymous
nvm im good. the second one was not correct though btw
anonymous
  • anonymous
u could have waited :( i didn't know there was a second one
anonymous
  • anonymous
me sowwy
anonymous
  • anonymous
for second one , take the cube root of each, that will give the side length then the scaling factor is the ratio of linear measurements or ratio of he side measurements....
anonymous
  • anonymous
It would be rather 1:4 i guess
anonymous
  • anonymous
lol i fell asleep
anonymous
  • anonymous
lol XD
anonymous
  • anonymous
@Icedragon50 its okay man

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