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Question

Find the square roots of the following decimal numbers:
(i) 7.29 (ii) 16.81 (iii) 9.3025 (iv) 84.8241

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Solution

(i) 7.29=729100

=3×3×3×3×3×310×10

=3×3×310

=2.7

(ii) 16.81=1681100

=41×4110×10

=4.1

(iii) 9.3025=9302510000

=5×5×61×6110×10×10×10

=3.05

(iv) 84.8241=84824110000

=3×3×307×30710×10×10×10

=9.21

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