Mathematics
Grade-7
Easy

Question

The circle has a circumference of 9.42 units. Determine the area of the square.

  1. 2.54     
  2. 1.56
  3. 2.25     
  4. 1.69

hintHint:

The side of the square is the radius of the circle

The correct answer is: 2.25


    straight C equals 2 pi straight r comma
2 pi straight r equals 9.42 comma
2 cross times 3.14 cross times straight r equals 9.42 comma
straight r equals fraction numerator 9.42 over denominator 6.28 to the power of apostrophe end fraction comma
straight r equals 1.5 comma
text  area of square  end text equals 1.5 cross times 1.5 text , end text
text area  end text equals 2.25 text  square units.  end text

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