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21 July, 12:12

The circumference of a circle changes from 20 to4 after a dilation. What was the scale factor of the dilation.

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Answers (1)
  1. 21 July, 14:05
    0
    0.2

    Step-by-step:

    20 (original) multiplied by ___ = 4 (new). Solve that by dividing by 20, and you get a scale factor of 0.2
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