Discussion :: Square Root and Cube Root
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If ,3\( \sqrt{5}\) + \( \sqrt{125}\)=17.88, then what will be the value of \( \sqrt{80}\) + 6\( \sqrt{5}\) ?
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Answer : Option D
Explanation :
3\( \sqrt{5}\) + \( \sqrt{125}\) =17.88
3\( \sqrt{5}\) +\( \sqrt{25*5}\)= 17.88
3\( \sqrt{5}\) + 5\( \sqrt{5}\) = 17.88
8\( \sqrt{5}\) =17.88
\( \sqrt{5}\) = 2.235
\( \sqrt{80}\) + 6\( \sqrt{5}\) = \( \sqrt{16*5}\) + 6\( \sqrt{5}\)
= 4\( \sqrt{5}\) + 6\( \sqrt{5}\)
= 10\( \sqrt{5}\) =(10 x 2.235) = 22.35
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