Find the radius of a circle whose circumference is 31.4 centimeters. Approximate Π as 3.14.
2 answers:
Circumference is Diameter * 3.14
so D * 3.14 = 31.4
31.4 / 3.14 = 10 so the diameter is 10.
the radius is half of the diameter so radius = 5 centimeters.
(31.4/3.14)/2=5 because π=circumference/diameter
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