What is the square root of 2.25?

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What is the square root of 2.25?

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Answer 1 · 2015-11-13T19:49:59

$1.5$ $1.5$

Explanation:

$15^{2} = 225$ $15^2 = 225$ , so $2.25 = \frac{225}{100} = \frac{225}{10^{2}}$ $2.25 = 225/100 = 225/(10^2)$

and $\sqrt{2.25} = \sqrt{\frac{15^{2}}{10^{2}}} = \frac{15}{10} = 1.5$ $sqrt(2.25) = sqrt((15^2)/(10^2)) = 15/10 = 1.5$

Answer 2 · 2015-11-13T20:04:11

Alternative approach.
$\sqrt{2.25} \to \sqrt{\frac{9}{4}} \to \frac{\sqrt{9}}{\sqrt{4}} \to \frac{3}{2} \to 1.5$ $sqrt(2.25) -> sqrt(9/4) -> sqrt(9)/sqrt(4) -> 3/2 ->1.5$

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Some situations one way works well and at another time it is not so good. To have several approaches is good

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What is the square root of 2.25?

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