14 pi cm or 43.982297150257105338477007365913cm
Circumference = 2*pi*7 = 43.98229715 or about 44 cm
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Circumference = 2 pi R = 14 pi = 43.9823 cm (rounded)
The circumference of a 7 cm circle is: 21.99 cm(diameter x pi = circumference).
The diameter of a circle is double the radius. So a circle with a radius of 7 cm has a diameter of 14 cm.
Radius of circle: 44/2*pi = 7 rounded Area of circle: pi*7 squared = 154 square cm rounded
Circumference is 2π times the radius. So, for 14π the radius is 7. Area is πr2, so the area of a circle with radius 7 is 72π, or 49π (153.93).