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Question

If the perimeter of a square is 20 cm, then its area is:


A

25 square cm

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B

25 cm

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C

5 square cm

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D

20 square cm

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Solution

The correct option is A

25 square cm


Perimeter of a square = 4 x side

Hence, 4 x side = 20 cm

Therefore, side = 20 4 = 5 cm

Area of a square = side x side = 5 x 5 = 25 square cm


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