Mathematics
Grade-7
Easy

Question

The spray from a spinning lawn sprinkler covers a circle. The distance around the circle is 64straight pi feet. ____________ is the radius of the circle covered by the sprinkler.

  1. 18
  2. 15
  3. 32
  4. 64

hintHint:

The circumference(distance around the circle) = 2cross times straight pi cross times straight r

The correct answer is: 32


    C equals 64 pi comma
2 pi r equals 64 pi comma
2 cross times r equals 64 comma
r equals 64 over 2
comma r equals 32 text  feet.  end text

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