Evaluate
\frac{5\pi }{9}\approx 1.745329252
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\frac{1}{9}\times 5\pi
Combine \frac{5\pi }{18} and \frac{5\pi }{18} to get \frac{1}{9}\times 5\pi .
\frac{5}{9}\pi
Multiply \frac{1}{9} and 5 to get \frac{5}{9}.
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