Circle simple

Circumference of a circle is 6.28. What is the area of the circle?

Correct result:

S =  3.1384

Solution:

p=6.28 p=2π⋅ r r=p/(2π)=6.28/(2⋅ 3.1416)≐0.9995 S=π⋅ r2=3.1416⋅ 0.99952=3.1384

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