Mathematics
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    (6-0.763932)-0.763932
    3∧3
    tan67.5
    sqrt(720000000/7)
    sqrt(1250000/7)
    sqrt(224000)
    1/2*3
    89/7.6
    8.85/4/3.14/7.8
    8.85/28/3.14/780
    13.7*2*cos0.62
    6*sin48
    3.14×0.9×(0.2×65+14.8×65)+3.14×0.45×0.45×1800=
    3.14×0.9×(0.2×65+13.8×65)+3.14×0.45×0.45×1800
    3.14×0.9×(0.2×65+17.8×65)+3.14×0.45×0.45×1800=
    3.14×0.9×(0.2×65+19.8×65)+3.14×0.45×0.45×1900=
    3.14×0.9×(0.2×65+2.2×65)+3.14×0.45×0.45×1800
    (sqrt(99)+sqrt(96)+sqrt(91)+sqrt(84)+sqrt(75)+sqrt(67)+sqrt(51)+sqrt(36)+sqrt(19))*4
    A(0,0)C(100,20)
    (0,0)(100,20)

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