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P =
1819.714 : 3.141593 = 1.3 * 0.02 * 32 +
579.233 = 0.832 + 132 + 0.99 *
579.233 2409 R
R = 2.039
R2
R2
R2
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4 * 1.65 * 20 + 0.6 * 1.65 * R * 18
R * 18
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