It's 18 cm. The radius is half the diameter of a circle. Half 36 cm is 18 cm.
A circle with a radius of 9 cm has an area of 254.47 square cm
It is 18 centimeters because your radius is exactly half of the diameter in any circle
circumference = pi*18 cm area = pi*92 square cm
Circumference of the circle: 0.18*pi = 0.565 cm rounded to 3 decimal places
It's 18 cm. The radius is half the diameter of a circle. Half 36 cm is 18 cm.
pi*18 cm
A circle with a radius of 9 cm has an area of 254.47 square cm
radius = 18/2 = 9 cm
If the diameter of a circle is 18 centimeters the circumference will be about 56.55 cm (d x Pi = C)
18 pi cm
It is 18 centimeters because your radius is exactly half of the diameter in any circle
Using 3.14 as Pi the area of circle is: 254.34
circumference = pi*18 cm area = pi*92 square cm
Circumference of the circle: 0.18*pi = 0.565 cm rounded to 3 decimal places
Circle area = (pi)r2 = 254r2 = 254/pir = √254/pi ≈ 92r = diameter = 2(9) = 18 cm
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