it is half the diameter e.g 10cm diameter = 5 cm radius
10cm
20 cm
radius = diameter ÷ 2 ⇒ radius = 10 cm ÷ 2 = 5 cm
you double the radius to find the diameter.
Divide the diameter by 2. Diameter/2=Radius. Example: Diameter is 10cm then Radius is 10/2=5. - learnthetechnology.blogspot.com
diameter=10cm radius=5cm
Radius = diameter/2 = 5 cm
it is half the diameter e.g 10cm diameter = 5 cm radius
10cm
20 cm
20 cm
radius = diameter ÷ 2 ⇒ radius = 10 cm ÷ 2 = 5 cm
if a radius is 5cm the diameter is 10cm rule- you double the radius
That depends what you mean with "a 20 cm. circle". If 20 cm. is the radius, you already have the answer. If 20 cm. is the diameter, the radius is half the diameter. (10cm)
5 cm because 5 is half of 10
10cm or 0.05meters