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Mathematics 7 Online
OpenStudy (kikuo):

http://prntscr.com/ama3yc Tri quesiton.

OpenStudy (anonymous):

the diagonal of a square is the length of the side of the square times \(\sqrt2\)

OpenStudy (anonymous):

|dw:1459389800971:dw|

OpenStudy (anonymous):

comes directly from pythagoras \[a^2+a^2=c^2\\ 2a^2=c^2\\ \sqrt{2a^2}=c\\ a\sqrt2 = c\]

OpenStudy (kikuo):

@satellite73 Can you explain the last step of that? How did |dw:1459389984400:dw| Turn into |dw:1459390006665:dw| Also, I'm not sure where I'm supposed to plug in the area in all this

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