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". 

Answered by Madeleine P. Maths tutor

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Factorise and solve x^2 - 8x + 15 = 0


Make x the subject of 5(x-3) = y(4-3x)


How would I simplify (3x^2 − 8x − 3)/(2x^2 −6x) fully?


Y=3x^2-2 ( Make x the ubject of the formula


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