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The diagram shows a circular piece of card of radius r cm, from which a smaller circle

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The diagram shows a circular piece of card of radius r cm, from which a smaller circle of radius x cm has been removed. The area of the remaining card is 209­πcm2. The circumferences of the two circles add up to 38­π. Write this information as a pair of simultaneous equations and hence find the values of r and x.

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r2 x2 209 2r 2x 38 r2 209 x2 ...View the full answer


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Cambridge IGCSE And O Level Additional Mathematics

Cambridge IGCSE And O Level Additional Mathematics

ISBN: 9781510421646

1st Edition

Authors: Val Hanrahan, Jeanette Powell

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