Christmas twist on the nrich 'Curvy Areas' problem (i.e. shapes made of semicircles). Single powerpoint slide with two problems on (a bauble and a christmas pudding). \n\nSuitable for top sets / A level groups using algebra or differentiate by allocating lengths to radii, or forget the areas altogether and just recreate the pictures using compasses.\n\nThe answer to the second question is 5/9.
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