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2 September, 23:52

The circumference of a circle is

81 if and only if its radius is 4.

True

False

+4
Answers (1)
  1. 3 September, 02:44
    0
    False

    Step-by-step explanation:

    There are at least a couple of ways you can tell this is false.

    • The given ratio 81/4 is rational; circumference to radius is irrational.

    • The given ratio is about 20; circumference to radius is about 6.
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