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Radical Form
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[tex] \sqrt{640} = \sqrt{64 \times 10}
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[tex] \sqrt{640} = \sqrt{64} \times \sqrt{10}
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[tex] \sqrt{640} = 8 \sqrt{10} [/tex]
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Decimal Form
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[tex] \sqrt{640} = 25.298 [/tex]
[tex] \sqrt{640} = 25.30 [/tex]
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Answer : √640 = 25.30 (nearest hundredth)
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