Question

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?

Answer 1

@ganeshie8 @zepdrix

Answer 2

@midhun.madhu1987 @Miracrown

Answer 3

@aryandecoolest

Answer 4

@nincompoop

Answer 5

@saseal

Answer 6

yes they are correct

Answer 7

you sure?

Answer 8

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

Answer 9

i basically guessed on both of them

Answer 10

lucky guesses then

Answer 11

*sigh* okie lemee show me steps

Answer 12

\[V =\frac{ 4 }{ 3 }\pi r^3\]

Answer 13

this is the formula

Answer 14

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

Answer 15

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

Answer 16

and round that to 2145 cm^3

Answer 17

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

Answer 18

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

Answer 19

me sowwy

Answer 20

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....

Answer 21

It would be rather 1:4 i guess

Answer 22

lol i fell asleep

Answer 23

lol XD

Answer 24

@Icedragon50 its okay man