Question

$\sqrt{0.09} + \sqrt{0.81} + \sqrt{1.44}$ എത്ര?

• A. 2.4
• B. 2.1
• C. 2.7
• D. 3

Answer 1

Answer:

A. 2.4

$\sqrt{0.09} + \sqrt{0.81} + \sqrt{1.44}$ എന്നതിന്റെ വില 2.4 ആണ്.

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• $\sqrt{0.09} =\sqrt{\frac{0.09\times100}{100}}$

  $=\sqrt{\frac{9}{100}}$

  $=\frac{\sqrt{9}}{\sqrt{100}}$

  $=\frac{3}{10}= 0.3$

• $\sqrt{0.81} =\sqrt{\frac{0.81\times100}{100}}$

  $= \sqrt{\frac{81}{100}}$

  $=\frac{\sqrt{81}}{\sqrt{100}}$

  $=\frac{9}{10}$

  $=0.9$

• $\sqrt{1.44} = \sqrt{\frac{1.44\times100}{100}}$

  $=\sqrt{\frac{144}{100}}$

  $=\frac{\sqrt{144}}{\sqrt{100}}$

  $=\frac{12}{10}$

  $=1.2$

ഇവയെല്ലാം തമ്മിൽ കൂട്ടുമ്പോൾ:
$0.3 + 0.9 + 1.2 = \mathbf{2.4}$