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OpenStudy (gabbyalicorn):
What is the surface area of the cube?
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OpenStudy (gabbyalicorn):
https://www.dropbox.com/s/iz43p30gjcqw93x/Screenshot%202015-06-06%2014.54.52.png?dl=0
OpenStudy (gabbyalicorn):
so 4 x 4 x 4 ? -3-
OpenStudy (michele_laino):
that is the volume
OpenStudy (gabbyalicorn):
64
OpenStudy (gabbyalicorn):
64 x 2?
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OpenStudy (michele_laino):
the area of surface is: 6*(4*4)=... since we have six sides
OpenStudy (gabbyalicorn):
96
OpenStudy (michele_laino):
and each of those sides is a square
OpenStudy (michele_laino):
that's right!
OpenStudy (gabbyalicorn):
:D so 96 x 4 ?
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OpenStudy (michele_laino):
no, it is A=64 mm^2 only
OpenStudy (michele_laino):
sorry it is:A=96 mm^2 only
OpenStudy (gabbyalicorn):
128
OpenStudy (michele_laino):
no, please, your answer is: area = 6*16=96 mm^2
OpenStudy (gabbyalicorn):
ooooh, i get it. sorry
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OpenStudy (michele_laino):
no worries! :)
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