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Question

If each side of a square of side 'a', is doubled, the new area is .

A
a2
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B
a4
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C
4a2
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D
4a4
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Solution

The correct option is C 4a2
Length of a side of a square = a units
We know that, the area of a square = (side)2.
Area = a×a = a2.

Length of the side of a square is doubled.
New length = 2a.
Area of the new square = 2a×2a=4a2.

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