punkin2
punkin2
19-03-2015
Mathematics
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the perimeter of a square in which A=169cm^2
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Аноним
Аноним
19-03-2015
52 is the perimeter because 13x13=169 and 13+13+13+13=52
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Аноним
Аноним
19-03-2015
2 ) A=a²
a²=169
a=√169=13
P=4a=4 13=52
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