(246.26-12.5×10)×0.562-2×17.2×√0.562+12.5×10
    (101.00-4.5×10)×0.704-2×10×√0.704+4.5×10
    (20-0×10)×0.704-2×10×√0.704+0×10
    (325.52×11.12+305.51×8.78+1806.29×4.45+694.1×0.74)/(116.43×10.93+40.48×8.74+683.69×4.38+180.81×0.73)
    arccos0.75
    tanarccos0.75
    tanarccos0.75*630
    tanarccos0.75
    900*tan(arccos0.8)
    900*6
    900×tan(arccos0.8)
    900×tan(arccos0.8)
    900×tan(arccos0.8)
    arccos0.75
    arccos0.8
    249.6×1.78+2×16.3×√1.78
    221.4×1.78+2×16.3×√1.78
    221.4×1.482+2×13.8×√1.482
    102.6×1.482+2×13.8×√1.482
    102.6×1.729+2×24.4×√1.729

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