How do you calculate: 3 over square root of 20?

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How do you calculate: 3 over square root of 20?

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Answer 1 · 2018-06-08T20:44:21

$3 \cdot \frac{\sqrt{5}}{10}$ $3*sqrt(5)/10$

Explanation:

Note that $\sqrt{20} = \sqrt{4 \cdot 5} = 2 \sqrt{5}$ $sqrt(20)=sqrt(4*5)=2sqrt(5)$
so
$\frac{3}{\sqrt{20}} = \frac{3}{2 \sqrt{5}} = \frac{3 \cdot \sqrt{5}}{10}$ $3/sqrt(20)=3/(2sqrt(5))=(3*sqrt(5))/10$

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How do you calculate: 3 over square root of 20?

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