How do I remember the area of a circle if it's not in the formula book?

I tend to use rhymes to remember difficult maths formulas - it makes life so much easier! For example, "I never knew how much I cared that the area of a circle is πr²". 

MP

Related Maths GCSE answers

All answers ▸

A cylinder of base radius 2x and height 3x has the same volume as a cone of base radius 3x and height h. Find h in terms of x.


Solve x^2 - 2x - 15 = 0


In the isosceles triangle ABC, AB=AC and angle B=(3x +32)degrees and angle C=(87-2X)degrees


Solve the two simultaneous equations. 1. x^2 + y^2 = 25, 2. y - 3x = 13