Question

What is the volume of a sphere with a radius of 9 inches?

108π
242π
642π
972π

Answer 1

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

Answer 2

\[V=\frac{ 4 }{ 3}(3.14)(9)^3\]

Answer 3

Solve.

Answer 4

wait what

Answer 5

Ok first i showed the formula
then all i did was plug in the numbers given.

Answer 6

ok one min

Answer 7

ok would it be c

Answer 8

@kidrah69

Answer 9

No thats not right...

Answer 10

do not plug he value of pi

Answer 11

Oh right >_< it doesnt even tell you the value of pi here! so just do whats in the formula and leave pi out

Answer 12

A

Answer 13

That's not quite right either. The formula is \[\frac{ 4 }{ 3}\Pi r ^{3}\] However since there is \(\pi\) in your answer choices, do not multiply by pi in the equation. This will be the equation you will use. \[\frac{ 4 }{ 3 }r ^{3}\] The question gives you the radius. That's 9 inches. What the 4/3 means is divide. So When you break the formula down, this is the math you'll be doing. \[4\div3\times9^{3}\] \(9^3\) means to multiply 9 by itself 3 times. So like this. \[4\div3\times9\times9\times9\]Can you do that for me? :)

Answer 14

947.7

Answer 15

so D

Answer 16

Hmm. I think you messed up somewhere in your math. Do you have a scientific calculator?

Answer 17

Yep, D.

Answer 18

:)