Solve for a
a=\frac{\pi }{72}\approx 0.043633231
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\pi =72a
Variable a cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 4a.
72a=\pi
Swap sides so that all variable terms are on the left hand side.
\frac{72a}{72}=\frac{\pi }{72}
Divide both sides by 72.
a=\frac{\pi }{72}
Dividing by 72 undoes the multiplication by 72.
a=\frac{\pi }{72}\text{, }a\neq 0
Variable a cannot be equal to 0.
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