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OpenStudy (anonymous):
The length of one side of a square is 7 cm. How long is its diagonal? 5.29 cm 7.78 cm 12.31 cm 9.90 cm .
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OpenStudy (anonymous):
9.90
OpenStudy (anonymous):
\[\sqrt{7^2+7^2}\]9.90
OpenStudy (anonymous):
hypotenuse of a 45 degree triangle is the length of the leg times sq rt 2
OpenStudy (anonymous):
thank you !
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