FP3.4.6 - The

The calculation of arc length and The equation of the curve may be given in cartesian or the area of a surface of revolution. parametric form.; Equations in polar form will not be set.

Use fp3.4.6 - the to connect the rule to the data and decision in the question.

This matters because fp3.4.6 - the determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply fp3.4.6 - the to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: FP3.4.6 - The is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.