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Question
Which is greater?
`3sqrt(5)` and `6sqrt(2)`
Sum
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Solution
Given: Compare `3sqrt(5)` and `6sqrt(2)`.
Step-wise calculation:
1. Calculate the approximate value of each term:
`3sqrt(5) = 3 xx sqrt(5)`
`6sqrt(2) = 6 xx sqrt(2)`
2. Use approximate values for the square roots:
`sqrt(5) ≈ 2.236`
`sqrt(2) ≈ 1.414`
3. Calculate each:
`3sqrt(5) = 3 xx 2.236 = 6.708`
`6sqrt(2) = 6 xx 1.414 = 8.484`
4. Compare:
6.708 < 8.484
`6sqrt(2)` is greater than `3sqrt(5)`.
So, `6sqrt(2) > 3sqrt(5)`.
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Chapter 1: Rational and Irrational Numbers - Exercise 1D [Page 28]
