Thinking about Algebra
Review question

Can we find the radii of two circles given two clues?
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Ref: R7032
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Question

The sum of the circumferences of two circles is \(\quantity{60\pi}{cm}\). and the sum of their areas is \(\quantity{458\pi}{sq.cm.}\) Calculate the radii of the circles.

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UCLES O level Additional Mathematics 1, QP 471/1, 1970, Q5(i)

Question reproduced by kind permission of Cambridge Assessment Group Archives. The question remains Copyright University of Cambridge Local Examinations Syndicate (“UCLES”), All rights reserved.

 Last updated 13-Sep-16
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