The radius of the circle is half the diameter of the circle. 30mm radius would mean 60mm diameter or 6cm.
Well, isn't that just a happy little question! To find the diameter of the circle, we simply need to double the radius. Since the radius is 30 mm, the diameter would be 60 mm. To convert that to centimeters, we just need to divide by 10, so the diameter of the circle is 6 cm.
The radius of a circle is half of its diameter
1/2 of the diameter
The diameter of a circle is twice its radius. Thus the radius of a circle is half its diameter. → a circle with a diameter of 15 cm has a radius of 15/2 cm = 7.5 cm
The radius of the circle is half the diameter of the circle. 30mm radius would mean 60mm diameter or 6cm.
6/2 = a radius of 3 cm
12 cm
Since the diameter is always twice the length of the radius, the length of the radius is 6cm.
The diameter of circle A is 12cm so its radius must be 6cm.
The circumference of a circle = 2*pi*radius or diameter*pi
12 cm A diameter is twice as long as the radius of a circle. D = 2r D = 2(6cm) = 12cm
The radius of a circle is the distance from the centre to the edge. The diameter is the distance right across the circle through the centre. So the diameter of a circle is always twice its radius. So if the radius of a circular CD is 6cm, the diameter is twice this - 12cm.
The circumference of a circle with a diameter of 6cm is about 18.85cm
Circumference of a circle is 2πr (two x Pi x the radius of the circle)Pi is usually taken as 3.14 for simple calculations - see here http://en.wikipedia.org/wiki/Pi for a longer determination of Pi.The radius is half the diameter.Thus, a circle with a diameter of 6cm has a circumference of 18.84cm
The answer depends on what the "6cm" refers to.
Well, isn't that just a happy little question! To find the diameter of the circle, we simply need to double the radius. Since the radius is 30 mm, the diameter would be 60 mm. To convert that to centimeters, we just need to divide by 10, so the diameter of the circle is 6 cm.