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  1. If the ratio of the area of two square is 9 : 1 the ratio of their perimeters is ?
    1. 9:1
    2. 3:1
    3. 3:4
    4. 1:3
Correct Option: B

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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