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Math Help - Hi tomorrow is my Math exam i really need help

  1. #1
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    Hi tomorrow is my Math exam i really need help

    Im really poor in math and i think im gono fail my math exam . oh god
    Can some one help me with these things that i have no idea what they are please PLEASE They are in my exam review paper
    Ex.1: Calculate the total surface area of a conical cup with base radius 7cm an slant height 14 cm
    Ex.2: A basketball has a surface area of 1810 cm square . find the radius of the basketball and find the volume of the air in it
    Sorry if i posted in wrong place
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  2. #2
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    Crna Gora
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    Re: Hi tomorrow is my Math exam i really need help

    Quote Originally Posted by tmrismyexam View Post
    Im really poor in math and i think im gono fail my math exam . oh god
    Can some one help me with these things that i have no idea what they are please PLEASE They are in my exam review paper
    Ex.1: Calculate the total surface area of a conical cup with base radius 7cm an slant height 14 cm
    Ex.2: A basketball has a surface area of 1810 cm square . find the radius of the basketball and find the volume of the air in it
    Sorry if i posted in wrong place
    1#

    A=r\pi(r+s)

    2#

    A=4r^2 \pi \Rightarrow r=\sqrt {\frac{A}{4\pi}}

    V=\frac{4}{3} r^3 \pi
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