Evaluate
\frac{8\sqrt{14}}{21}\approx 1.42539329
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\frac{8\sqrt{14}}{7\times 3}
Multiply \frac{8\sqrt{14}}{7} times \frac{1}{3} by multiplying numerator times numerator and denominator times denominator.
\frac{8\sqrt{14}}{21}
Multiply 7 and 3 to get 21.
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