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If the ratio of the area of two square is 9 : 1 the ratio of their perimeters is?

Correct Answer: 3:1

Explanation:

Let the area of square be (9x)2 m2 and (x2) m2
Then, their sides are (3x) m and x metres respectively
∴ Ratio of their perimeters = 12x / 4x
=3:1


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