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Mathematics 23 Online
OpenStudy (anonymous):

IS THIS RIGHT???? FAN+MEDAL-BEST RESPONSE-

OpenStudy (anonymous):

OpenStudy (anonymous):

@BloomLocke367

OpenStudy (anonymous):

i got 1767.15

OpenStudy (anonymous):

ok.. what do you think @BloomLocke367 or @iGreen ?

OpenStudy (bloomlocke367):

well, the volume of a sphere is \[V=\frac{ 4 }{ 3 }\pi r^3\]

OpenStudy (bloomlocke367):

so, no, that's not right... what is 7.5^3?

OpenStudy (mathstudent55):

That is not correct for this problem. When a problem asks for the exact volume, it usually means it wants the volume in terms of pi, since pi is an irrational number and non terminating.

OpenStudy (anonymous):

421.875

OpenStudy (bloomlocke367):

okay, multiply that by 4

OpenStudy (anonymous):

1687.5

OpenStudy (mathstudent55):

Use the formula for the volume of a sphere and calculate everything except for the multiplication by pi. \(V = \dfrac{4}{3} \pi r^3 = \color{red}{\dfrac{4}{3} \times (7.5)^3} \times \pi\) Do only the part in red. Then write the answer with pi multiplied to it.

OpenStudy (bloomlocke367):

then, divide by 3

OpenStudy (anonymous):

562.5

OpenStudy (bloomlocke367):

and THAT'S your answer :) good job.

OpenStudy (anonymous):

THANK U!!!

OpenStudy (bloomlocke367):

you're welcome :)

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