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