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Mathematics 8 Online
OpenStudy (anonymous):

What is the exact volume of a sphere that has a radius of 9.6 m? [ ? ] m^3

OpenStudy (anonymous):

@TheSmartOne @BloomLocke367 @iGreen

OpenStudy (igreen):

\(\dfrac{4}{3} \pi r^3\) 'exact' means in terms of pi..so just simplify everything except pi.

OpenStudy (anonymous):

3.14x9.6x9.6x9.6

OpenStudy (igreen):

Correct.

OpenStudy (anonymous):

do that?

OpenStudy (igreen):

Yep

OpenStudy (igreen):

Wait..no..

OpenStudy (igreen):

We don't multiply 3.14..just replace that with 4/3

OpenStudy (anonymous):

ok..hold it

OpenStudy (anonymous):

1179.64

OpenStudy (igreen):

Yeah, but you rounded it wrong..there's an 8 at the end.

OpenStudy (igreen):

Oh, we don't want to round..because we want the exact value.

OpenStudy (anonymous):

ok so 1179.65

OpenStudy (anonymous):

is that it?

OpenStudy (igreen):

No, don't round it, multiply again.

OpenStudy (anonymous):

wait what?

OpenStudy (igreen):

Multiply 4/3 * 9.6 * 9.6 * 9.6 again.

OpenStudy (igreen):

?

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