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OpenStudy (anonymous):
What is the volume of a cube with sides that are 9 m long?
A.
27 cubic meters
B.
81 cubic meters
C.
486 cubic meters
D.
729 cubic meters
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jimthompson5910 (jim_thompson5910):
Volume of Cube = (side length)^3
which is the same as saying
Volume of Cube = (side length)*(side length)*(side length)
OpenStudy (anonymous):
the answer i got was 531441
jimthompson5910 (jim_thompson5910):
that's way too big
OpenStudy (whpalmer4):
\[V = s^3 = s*s*s\]\[s=9\]\[V = 9*9*9 = \]Units will be \(m*m*m = m^3\)
OpenStudy (anonymous):
i got 6561
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OpenStudy (whpalmer4):
How are you multiplying? Calculator, pencil & paper, abacus, gathering many friends to borrow fingers and toes? :-)
OpenStudy (whpalmer4):
What is 9*9?
OpenStudy (anonymous):
i'm using calculater and 9*9 is 81
OpenStudy (whpalmer4):
okay, what is 81*9?
OpenStudy (anonymous):
729
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OpenStudy (whpalmer4):
Okay, so \[V = s^3 = 9^3 = 9*9*9 = 729\]
OpenStudy (anonymous):
Length (9m) x Width (9m) x Height (9m) = Area(Volume) of Cube at approximately 729m³
OpenStudy (anonymous):
oh ok thanks i was adding 9 6 times
OpenStudy (whpalmer4):
@butterfly5 there's no "approximately" here, it is exactly 729 cubic meters
OpenStudy (anonymous):
lol
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