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OpenStudy (anonymous):
What is the area of triangle ABC within this cube?
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OpenStudy (anonymous):
|dw:1402101736519:dw|
OpenStudy (anonymous):
it is a cube with length of 3 on each side
OpenStudy (anonymous):
length ab=bc=ca length ab = 3sqrt(2) ab=sqrt(3^2+3^2) =sqrt(2*3^2) =3sqrt(2) so now we have an equilateral triangle (length ab)^2sqrt(3)/4
OpenStudy (anonymous):
7.79 square units
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