Evaluate
\frac{31\sqrt{3}}{21}\approx 2.556836906
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\frac{31}{7\sqrt{3}}
Add 28 and 3 to get 31.
\frac{31\sqrt{3}}{7\left(\sqrt{3}\right)^{2}}
Rationalize the denominator of \frac{31}{7\sqrt{3}} by multiplying numerator and denominator by \sqrt{3}.
\frac{31\sqrt{3}}{7\times 3}
The square of \sqrt{3} is 3.
\frac{31\sqrt{3}}{21}
Multiply 7 and 3 to get 21.
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