The ratio of area of two squares is 49 : 9. The ratio of their perimeter is:-

7 : 3 7 : 2 8 : 3 10 : 3

7 : 3

Area             49           :         9 ∴    Side               7           :         3            *(side ratio = \(\sqrt {area\;ratio}\)) ∴   Perimeter        7           :         3            *(perimeter ratio = side ratio) The ratio of their perimeter = 7 : 3