The radius of the circle area has been 14 km.
The area has been defined as the extent of the region or the shape. Area of different shape has been calculated in varying forms.
The area of the circle has been given as:
[tex]\rm Area=\pi \textit r^2[/tex]
The given area of circle has been 615.75 square kilometer.
The value of [tex]\pi[/tex] has been 3.14.
Substituting the values for the radius of circle (r):
[tex]\rm 615.75\;km^2=3.14\;\times\;\textit r^2\\\\ \textit r=\sqrt{\dfrac{615.75}{3.14} }\;km\\\\ \textit r=14\;km[/tex]
The radius of the circle area has been 14 km.
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