Evaluate
\frac{15\sqrt{3}}{4}\approx 6.495190528
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15\times \frac{1}{2}\times \frac{\sqrt{3}}{2}
Multiply 3 and 5 to get 15.
\frac{15}{2}\times \frac{\sqrt{3}}{2}
Multiply 15 and \frac{1}{2} to get \frac{15}{2}.
\frac{15\sqrt{3}}{2\times 2}
Multiply \frac{15}{2} times \frac{\sqrt{3}}{2} by multiplying numerator times numerator and denominator times denominator.
\frac{15\sqrt{3}}{4}
Multiply 2 and 2 to get 4.
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