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apologiabiology

  1. assuming you mean SURFACE area

    look at shape
    fold it out or whateveryo yo like
    we see that the faces are
    4 triangles
    4 rectangles in midddle
    4 more triangles on other side


    calculate areas
    area of triangle=1/2bh
    area of rectangle=bh

    leftmost side
    h=1.8
    b=2
    41/221.8=7.2 cm^2

    middle recangles
    base=3
    height=2
    aera=3    2=6
    multply by 4 snce 4 recangles
    64=24 cm^2

    other triangles

    b=2
    h=2.71
    total area=4    1/222.71=10.84cm^2
    add them up

    7.2cm^2+24cm^2+10.84cm^2=42.04cm^2



    8. interesting question, not enought time to answer for me and partially too copmplex

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