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Rearrange the formula so that $l$ is the subject.
Mathematics 0580 · IGCSE · Algebraic manipulation
Algebraic manipulation — practice question
Worked solution & mark scheme
This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$A-\pi r^2=\pi rl$ or $\pi r^2-A=-\pi rl$ or $\frac{A}{\pi r}=l+r$” …
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