If 5\(\sqrt{3}\)\(\sqrt{75}\) = 17.32, then the value of 14\(\sqrt{3}\)\(\sqrt{108}\) is:

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SSC CGL 2021 Tier-I (Held On : 20 April 2022 Shift 3)
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  1. 32.46
  2. 33.86
  3. 34.64
  4. 35.64

Answer (Detailed Solution Below)

Option 3 : 34.64
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Detailed Solution

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Given:

5\(\sqrt{3}\) + \(\sqrt{75}\) = 17.32

Calculation:

5\(\sqrt{3}\) + \(\sqrt{75}\) = 17.32

⇒ 5\(\sqrt{3}\) + \(5\sqrt{3}\) = 17.32

⇒ \(10\sqrt{3}\) = 17.32

⇒ \(\sqrt{3}\) = 17.32/10

⇒ \(\sqrt{3}\) = 1.732       ....(1)

Now,

14\(\sqrt{3}\) + \(\sqrt{108}\)

⇒ 14\(\sqrt{3}\) + \(\sqrt{36 × 3}\)

⇒ 14\(\sqrt{3}\) + \(6\sqrt{3}\)

⇒ \(20\sqrt{3}\)

⇒ 20 × 1.732 (From 1)

⇒ 34.64

∴ The value of 14\(\sqrt{3}\) + \(\sqrt{108}\) is 34.64.

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