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For younger learners

  • Early Years Foundation Stage

Candy Floss

Age 14 to 16
ShortChallenge Level Yellow starYellow star
Secondary curriculum
  • Problem
  • Solutions

Rita is making candy floss at home.

She melts a cylinder of sugar with diameter 3 cm and length 4 cm.
She then spins it into a long cylindrical strand of diameter 1 mm.

Assuming that the melting and spinning does not affect the volume of the sugar, how long is the strand of candy floss?


You can find more short problems, arranged by curriculum topic, in our short problems collection.

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Draw two circles, each of radius 1 unit, so that each circle goes through the centre of the other one. What is the area of the overlap?

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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