Question

Evaluate:
$\sqrt{\frac{16}{81}}$

Answer 1

$\sqrt{\frac{16}{81}}=\frac{\sqrt{16}}{\sqrt{81}}$

$\sqrt{16}=4\mathrm{and}\sqrt{81}=9$

∴ $\sqrt{\frac{16}{81}}=\frac{\sqrt{16}}{\sqrt{81}}=\frac{4}{9}$