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Let the side of square = a
Area of square = a²

Length of its side is doubled = 2a
New area = (2a)²  = 4a²

Ratio of new area to its previous area = 4a² a² = 4 : 1

1 5 1
Hope it helps :) and if it does please click on thanks button above & mark as best answer ^_^
Let the side of square be 's'
now,new side=2s
new area    =(2s)²
0 0 0
say thanks and click on best answer
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