Question

√45 × √20 is equal to:

Answer 1

Answer:

$\sqrt{45} = \sqrt{5 \times 3 \times 3}$

$- - > \sqrt{45} = 3 \sqrt{5}$

$\sqrt{20} = \sqrt{5 \times 2 \times 2}$

$- - > \sqrt{20} = 2 \sqrt{5}$

Now

$</strong><strong>--</strong><strong>></strong><strong>2 \sqrt{5} \times 3 \sqrt{5}$

$</strong><strong>--</strong><strong>></strong><strong>6 \times 5$

$= 30$