Solve for a
a = \frac{5 \sqrt{3}}{2} \approx 4.330127019
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10a=25\sqrt{3}
Swap sides so that all variable terms are on the left hand side.
\frac{10a}{10}=\frac{25\sqrt{3}}{10}
Divide both sides by 10.
a=\frac{25\sqrt{3}}{10}
Dividing by 10 undoes the multiplication by 10.
a=\frac{5\sqrt{3}}{2}
Divide 25\sqrt{3} by 10.
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