Mathematics
Grade9
Easy

Question

Find the area of a circle with a circumference of 12.56 units.

  1. 12.56    
  2. 24.34    
  3. 13.26    
  4. 15.64    

hintHint:

A equals   pi r to the power of 2 end exponent
Circumference = 2×pi×r

The correct answer is: 12.56


    C i r c u m f e r e n c e   o f   t h e   c i r c l e equals 2 cross times pi cross times r= 12.56
    Radius = fraction numerator 12.56 over denominator 2 cross times 3.14 end fraction= fraction numerator 12.56 over denominator 6.28 end fraction=
    Area of circle=pi r to the power of 2 end exponent = 3.14×2×2 = 12.56.

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