Radius of a circle= Perimeter of the circle/2*pi Radius is half the diameter Radius is the length of a straight line from the center point of the circle to the edge of the circle.
If it is a 7.1 cm radius circle, then its radius is exactly 7.1 cm!
If the circumference of a circle is 132cm its radius is: 21.01 cm
The diameter of a circle is twice the radius. A circle with a radius of 9 would have a diameter of 18. (9*2=18).
the circumfrence of a circle is pi times it's radius squared.
The circumference of a circle with a 7cm radius is 44cm. The area is 154cm2
7cm; the diameter of a circle is twice its radius.
The radius is 7cm
3.5 cm
153.94 square cm
circumference of a circle = 2*pi*radius or diameter*pi
Area of the circle: pi*7squared = 153.93804 square cm
r=square root of 7/^
98 cm^2
C=2 pi R
Circumference of the circle: 2*pi*7 = 44 cm rounded up to the nearest whole number
66CM