√2 = 1.4 ആണെങ്കിൽ, \(\sqrt {98}\) ന്റെ മൂല്യമാണ്:

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  1. 8.9
  2. 9.8
  3. 0.98
  4. \(\frac 1 {9.8}\)

Answer (Detailed Solution Below)

Option 2 : 9.8
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നൽകിയിരിക്കുന്നത്:

\({\sqrt2}\) = 1.4  \(\sqrt {98}\) ന്റെ മൂല്യം നമ്മൾ കണ്ടെത്തേണ്ടതുണ്ട് 

കണക്കുകൂട്ടൽ:

98 = 2 × 7 × 7

\(\sqrt {98}\) = √(2 × 7 × 7)

⇒ \(\sqrt {98}\) = 7√2

⇒ \(\sqrt {98}\) = 7 × 1.4     [∵ √2 = 1.4 നൽകിയിരിക്കുന്നു 

⇒ \(\sqrt {98}\) = 9.8

∴ \(\sqrt {98}\) ന്റെ മൂല്യമാണ് 9.8

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