Mathematics
Grade-7
Easy

Question

The area of a circle is 1193.01 square yards. Determine its perimeter.

  1. 54.01
  2. 69.08
  3. 147.3
  4. 169.21

hintHint:

area of the circle = πr squared
and the perimeter of the circle = 2 πr

The correct answer is: 69.08


    A r e a equals pi r squared equals 1193.01
r squared equals fraction numerator 1193.01 over denominator 3.14 end fraction
r squared equals 121
r squared space equals space 11 cross times 11
straight r equals 11 text  yards end text
w e space n o space t h e space p e r i m e t e r space equals space 2 straight pi straight r
C space equals space 2 pi r
C equals 2 cross times 3.14 cross times 11
C equals 69.08 text  yards.  end text

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