Find the square roots of the following numbers correct to two places of decimal:
(i) $1.7$ (ii) $23.1$ (iii) $5$ (iv) $20$ (v) $0.1$

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Solution

(i) $1.7$
$\sqrt{1.7} = 1.303$ to three decimal places.
$= 1.30$ correct to two decimal places.
(ii) $23.1$
$\sqrt{23.1} = 4.806$ to three decimal places.
$= 4.81$ correct to two decimal places.
(i) $5$
$\sqrt{5} = 2.236$ to three decimal places.
$= 2.24$ correct to two decimal places.
(i) $20$
$\sqrt{20} = 4.472$ to three decimal places.
$= 4.47$ correct to two decimal places.

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