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Help with GCSE further maths question please

Discussion in 'Mathematics' started by luci445, Nov 7, 2015.

  1. luci445

    luci445 New commenter

    Hello everyone! I came across this question last week which was from a GCSE further maths past paper. Any help in finding the solution would be greatly appreciated. It was, I believe, worded as follows:

    Two cones are mathematically similar. The height of the smaller cone is exactly half the height of the larger cone. The surface area of the larger cone is 112πcm2. Work out the surface area of the smaller cone, giving your answer as a multiple of π.

    Maybe I've missed something. I look forward to hearing from someone about it!
     
  2. DM

    DM New commenter

    If a length scale factor is halved then the area scale factor is quartered.
     
  3. colinbillett

    colinbillett Occasional commenter

  4. colinbillett

    colinbillett Occasional commenter

  5. luci445

    luci445 New commenter

    Thanks DM and Colin!
     
    colinbillett likes this.

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