circumference of a circle = 2*pi*radius or diameter*pi
A circumference of 21.99 cm
The radius is 7cm
Circumference of the circle: 2*pi*7 = 44 cm rounded up to the nearest whole number
http://wiki.answers.com/What_is_the_circumference_of_a_circle_with_a_radius_of_7cmhttp://wiki.answers.com/What_is_the_circumference_of_a_circle_with_a_radius_of_7cm
The circumference of a circle with a 7cm radius is 44cm. The area is 154cm2
circumference of a circle = 2*pi*radius or diameter*pi
A circumference of 21.99 cm
The radius is 7cm
Circumference of the circle: 2*pi*7 = 44 cm rounded up to the nearest whole number
http://wiki.answers.com/What_is_the_circumference_of_a_circle_with_a_radius_of_7cmhttp://wiki.answers.com/What_is_the_circumference_of_a_circle_with_a_radius_of_7cm
pi = 21.99/7 pi = circumference/diameter Just multiply your diameter by pi to get a circumference.
C=2 pi R
21.99113 approximately... * * * * * Accurate to 5 decimal places but WRONG by a factor of 2. Circumference = 2*pi*radius so radius = 7 cm => circumference = 43.98 cm.
The area of a circle is pi*r2 and its circumference is 2*pi*r where r is the radius = half the diameter. So r = 3.5 cm. Then area = 38.48 square cm and circumference = 21.99 cm As to the circumstance of the circle, that is rather a personal question!
the reason is because a circle is divided in 3 parts and the left overs are .14 so when you measure the ciecumference, you times the diameter by 3.14 and you get the correct answer to the question.EX: R=3.5cm D=7cm 7cm so that is why we use pi . x 3.14 -------- 21.98
3.14