What do you need to remember for the exam, and what is given in the formulae booklet?
For C1, the only information given in the Formulae Booklet is:
Surface area of a sphere = 4лr2
Area of curved surface of cone = лr x slant height
un = a + (n – 1)d
Sn = ½ n(a + l) = ½ n[2a + (n – 1)d]
Everything else you need to remember!
If you want to see exactly what’s in the formulae booklet, have a look at Edexcel Mathematical Formulae and Tables Booklet