Solve for α
\alpha =\frac{30960}{169\pi }\approx 58.312864357
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30960=\alpha \pi \times 13^{2}
Multiply both sides of the equation by 360.
30960=\alpha \pi \times 169
Calculate 13 to the power of 2 and get 169.
\alpha \pi \times 169=30960
Swap sides so that all variable terms are on the left hand side.
169\pi \alpha =30960
The equation is in standard form.
\frac{169\pi \alpha }{169\pi }=\frac{30960}{169\pi }
Divide both sides by 169\pi .
\alpha =\frac{30960}{169\pi }
Dividing by 169\pi undoes the multiplication by 169\pi .
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