This is the "empirical rule." Approx. 68% of a data set lie within one standard deviation of the mean.
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what do you need help with
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the sales tax is $73.54
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Answer: 726cm squared
Surface area is the area of all the faces added together.
If the area of one face is 11x11=121
Because it is a cube and it has six faces with the same surface area we do 121x6=726 to give us the total surface area.
Answer: dont know sorry
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