Mathematics
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    59.85×0.8×2.4×10
    ( 840.50+800+1648.5)/ (3782.26)
    2×150×3.14×2.5×0.7
    50.03×7.56×1×10
    50.03×0.7×2.4×10
    =59.85-π×(2.5/2)^2*2
    =59.85-π×(2.5/2)^2
    48/[(cos20)^3]
    4πcos20
    arcsin(33/40)
    0.14×360/1.89×25
    (sin27)/(sin63)
    1-2e^(-2)
    1-e^(-2)
    1/2×1.25×〖67.55〗^2×2.0×0.22
    1.35×50.04
    1.00×(23/10)^0.16×43.8
    1/2×1.25×〖38.87〗^2×1.4×0.4
    1/2×1.25×〖38.87〗^2×1.4×0.6
    1/2×1.25×〖38.87〗^2×2.0×0.12

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