A true and useful definition of "radius" is that it's 1/2 of the diameter.
Diameter is twice the radius.
Yes. Radius times two equals the diameter. 2r=D
Diameter divided by 2 equals radius r=d/2 For example, if the radius was 3.5, the diameter would be 7.
If the circle has diameter d = 2.25 cm, then its radius is d/2 = 1.125 cm
If d represents the diameter, then radius = d/2 = 1.125 cm
to get the diameter from the radius you simply multiply the radius by 2 since the radius is half the diameter. d=2r where d = diameter and r = radius
The radius of a circle with diameter or 8 inches is 4 inches. The diameter equals 2 times the radius or d=2*r. --> 8 in = 2*r so, r = 4 in
Diameter, the line that dissects the circle exactly in half.
For all circles , however, large or small The diameter is twice the radius. Diameter(d) equals(=) radius(r) plus(+) radius(r). d = r + r d = 2r . NB The diameter is a straight line from the circumference to the centre , and then out to the opposite sided circumference. It is NOT an angled line centred on the central point.
To calculate the radius is very easy, the formula is d/2 where d is diametre. therefore according to d/2 = 9cm/2 which is equals to 4.5 cm Result : the radius of a circle with a diameter of 9 cm is 4.5 cm.
d = 2r, where d is diameter and r is radius.
The circumference of a circle is 2πr where r is the radius or πd where d is the diameter. The circumference of the apple pie divided by its diameter is πd/d = π.