it is half the diameter e.g 10cm diameter = 5 cm radius
Radius = 5/(2*pi) = 0.7958 cm rounded to 4 decimal places
radius = diameter ÷ 2 ⇒ radius = 10 cm ÷ 2 = 5 cm
A = 78.54 cm2
If the circumference of a circle is 12 cm the radius is: 1.91 cm
The area of a circle, if the radius is 5 cm, is: 78.54 cm2
The circumference of a circle if the radius is 5 cm is: 31.42 cm (radius x 2 x Pi = circumference).
10 cm; the diameter of a circle is twice its radius.
10 cm
radius 5 cm diameter 10 cm
The circumference of a circle 5cm in radius is about 31.42cm
10 cm (diameter is double the radius)
5 cm
diameter = radius × 2 → radius = diameter ÷ 2 = 10 cm ÷ 2 = 5 cm
it is half the diameter e.g 10cm diameter = 5 cm radius
If it is a 7.1 cm radius circle, then its radius is exactly 7.1 cm!
Radius = diameter/2 = 5 cm