Find the sub-duplicate ratio of 9a^2 : 49b^2 - Vidyadip

Question

Find the sub$-$duplicate ratio of $9a^2 : 49b^2$

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Answer

Sub$-$duplicate ratio of $9 a^2: 49 b^2$
$=\sqrt{9 a^2}: \sqrt{49 b^2}$
$ =3 a : 7 b .$

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