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## anonymous one year ago 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?

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1. anonymous

@ganeshie8 @zepdrix

2. anonymous

@midhun.madhu1987 @Miracrown

3. anonymous

@aryandecoolest

4. anonymous

@nincompoop

5. anonymous

@saseal

6. anonymous

yes they are correct

7. anonymous

you sure?

8. anonymous

yes use the formula for a sphere do u know it?

9. anonymous

i basically guessed on both of them

10. anonymous

lucky guesses then

11. anonymous

*sigh* okie lemee show me steps

12. anonymous

$V =\frac{ 4 }{ 3 }\pi r^3$

13. anonymous

this is the formula

14. anonymous

now in your diagram the diameter is 16 which means the radius=diameter/2=8

15. anonymous

Now plug it into the formula $V=\frac{ 4 }{ 3 }\pi 8^3$=2144.66058485cm^3

16. anonymous

and round that to 2145 cm^3

17. anonymous

nvm im good. the second one was not correct though btw

18. anonymous

u could have waited :( i didn't know there was a second one

19. anonymous

me sowwy

20. 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....

21. anonymous

It would be rather 1:4 i guess

22. anonymous

lol i fell asleep

23. anonymous

lol XD

24. anonymous

@Icedragon50 its okay man

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