Solution: Substitute $ x = 8 $: $ S = \frac6{\sqrt8} = \frac6{2\sqrt2} = \frac3{\sqrt2} $. Rationalize: $ \frac{3\sqrt2}2 $. Final answer: $ \boxed{\dfrac{3\sqrt2}2} $. - ToelettAPP
Mar 10, 2026
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