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Mathematics 19 Online
OpenStudy (anonymous):

a square mosaic is made of small glass squares. if there are 169 small squares in the mosaic, how many are along an edge?

OpenStudy (alexandervonhumboldt2):

take sqrt169=13

OpenStudy (alexandervonhumboldt2):

as it is a square

OpenStudy (alexandervonhumboldt2):

13 along one side so for 4 sides 4*13=52

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