21.99113 approximately...
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Accurate to 5 decimal places but WRONG by a factor of 2.
Circumference = 2*pi*radius so radius = 7 cm => circumference = 43.98 cm.
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The circumference of a circle with a 7cm radius is 44cm. The area is 154cm2
The circumference of circle with radius 12cm is 75.4cm
The radius of a circle with a circumference of 110 is: 17.507
The circumference of a circle with a radius of 6.7 is: 42.097
The circumference of a circle if its radius is 3 is about 18.85