Respuesta :

roohafzah

Answer :

  • 4.503 km

Explanation :

the area of a circle is given by,

  • area = πr^2

plug in the value of area

  • 63.7 km^2 = πr^2
  • 63.7/π km^2 = r^2
  • r = √(63.7/π) km
  • r = 4.503 km ( 3 d.p. )
The answer is r=4.5 km.
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