Circles don't have "length", however:
C = 2*pi*r
d = pi*r
Thus, the radius of a circle can be found by dividing the Circumference (C) by (2*pi):
72 cm / (2*pi) = 11.459 cm
Remember the circle eq'n C = pi* d Where pi = 3.141592.... ~ 3.14 d = 72 cm Hence C = 3.14 * 72 cm = 226.1946711... cm C ~ 226.2 cm
Area = pi*72 square cm Circumference = pi*14 cm
10
If the circumference of a circle is 12 cm the radius is: 1.91 cm
A circle with a radius of 0.5 cm has a circumference of 3.14 cm.
If the circumference of a circle is 45 cm the length of the diameter in centimeters is: about 14.32 cm
If the circumference of a circle is 48 cm its diameter is: 15.28 cm
If the circumference of the circle is 32 cm, the length of the arc that is 1/4 of the circle is: 8 cm
Remember the circle eq'n C = pi* d Where pi = 3.141592.... ~ 3.14 d = 72 cm Hence C = 3.14 * 72 cm = 226.1946711... cm C ~ 226.2 cm
Area = pi*72 square cm Circumference = pi*14 cm
-80
Remember the circle equation. C = pi *d pi = 3.141592.... d = 6.2 cm Hence C = 3.141592... X 6.2 cm C = 19.7787445.... cm C ~ 19.79 cm To nearest hundredth and 2 d.p.
288cm. Apex
10
If a circle has a circumference of 16 cm then the radius is about: 2.546 cm
The circumference of circle that is 8 cm is: about 25.13 cm (diameter x pi = circumference).
The circumference of a 12 cm circle is: 37.7 cm