C5.3.1 Carry out calculations involving the circumference and area of a circle.
Carry out calculations involving the circumference and area of a circle.
C5.3.2 Carry out calculations involving arc length and sector area as
Carry out calculations involving arc length and sector area as fractions of the circumference and area of a circle, where the sector angle is a factor of 360°. Answers may be asked for in terms of π. Formulas are given in the List of formulas.