Evaluate
30\pi \approx 94.247779608
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30\pi
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15\times 2\pi
Add 7 and 8 to get 15.
30\pi
Multiply 15 and 2 to get 30.
15\times 2\pi
Add 7 and 8 to get 15.
30\pi
Multiply 15 and 2 to get 30.
Examples
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