Mathematics
Grade-7
Easy

Question

The circle has a circumference of 15.7 units. Determine the perimeter of the Square.

  1. 10
  2. 15
  3. 17
  4. 28

hintHint:

The perimeter of the square is 4x side of the square.
The side of the square is the radius of the circle

The correct answer is: 10


    straight C equals 2 pi straight r comma
2 pi straight r equals 15.7 comma
2 cross times 3.14 cross times straight r equals 15.7
straight r equals fraction numerator 15.7 over denominator 6.28 end fraction comma
straight r equals 2.5 text , end text text p end text
text erimeter of  square  end text equals 4 cross times 2.5 comma
straight P equals 10 text  units.  end text

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