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$\sqrt{\frac{16}{49}}=\frac{P}{49};\ p=?$
Given: Expression $\sqrt{\frac{16}{49}}=\frac{p}{49}$.
To do: To find the value of $p$.
Solution:
Given expression: $\sqrt{\frac{16}{49}}=\frac{p}{49}$
$\Rightarrow p=\sqrt{\frac{16}{49}}\times49$
$\Rightarrow p=\sqrt{\frac{4\times4}{7\times7}}\times49$
$\Rightarrow p=\frac{4}{7}\times49$
$\Rightarrow p=28$
Thus, $p=28$.
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