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  1. R

    rates of change help

    hi people some questions from fitzpatrick:- pg 99 Q13 sand is poured into a heap in the shape of a right circular cone whose height is always equal to the radius of the base, at a constant rate of 4 cm^3/min. when the heap is 10 cm high, how fast is the height increasing, and the area of the...
  2. R

    Chem past papers

    hey everyone i've been trying to find chem trial papers but only succeded in finding a few. if anyone has more could they please attach them or send me the link thanks help will be appreciated
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    textbooks Used for 4 unit

    hey guys i was just curious what textbooks are you using for 4 unit maths. i am planning to use: SK patel (school textbook) Fitzpatrick maybe cambridge thanks
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