It is customary to call a circle a 38 inch circle if its diameter is 38 inches. If that is the case, the radius = diameter/2 = 19 inches.
38: the diameter of a circle is twice its radius.
If diameter is 38, then the radius is half of that or 19 inches.. Now the area is Pix192
If the circumference is 38, the diameter is 38/pi. Since the radius is half of the diameter, the radius is 19/pi.
The area of a circle if the radius is 9m 254.5m2
The radius of a circle with the area of 36 is 3.385
The area of a circle of radius 21 is 1386
Area of a circle = pi*radius squared
The area of a circle with a radius of 14.4 is 651.4
The radius is one-half of the diameter. Hence, the radius of a 76 in diameter circle is 38 in.
238.76
A circle with a radius of 135 units has an area of 57,255.53 square units.