Twelve inches is a length. It can be a diameter, but if it is a diameter, you would simply say 'The circle is 12 inches diameter'. So; how big is it - it is 12 inches.
The diameter of the circle will be: 26.1 inches.
If the circumference of a circle is 28 inches the diameter is: 8.913 inches (circumference divided by Pi = diameter).
Frisbees come in different sizes. The diameter can be 8 inches, 10 inches, 12 inches, or another diameter.
If a circle has a diameter of 12.8 inches its circumference is: 40.21 inches (circumference = diameter x Pi).
the diameter of human hair varies from about 40 microns to 120 microns. a micron or micrometer is a millionth of a meter. Copy paper thickness is about 100 microns (or 0.1 millimeter).
The average diameter of human hair is 100 micrometres.
0.000095meters = 0.095mm Dia of Hair = 0.095 + 10 = 10.095mm Diameter = 10.095mm
Human scalp hair normally grows at about 0.5 inches a month.
A nanometer is about 1,000 times smaller than the diameter of a human hair. A human hair is typically around 80,000-100,000 nanometers in diameter, while a nanometer is one-billionth of a meter.
Varies from 50 to 120 microns. On average a human hair is usually around 100 microns.
On average, a human hair is about 0.02 to 0.04 millimeters in diameter.
Human hair varies in size greatly. A child's head hair can be as fine as 0.05mm. An adult's head hair can be as course as 0.25mm. Adult eye- brow hair can be as thick as 0.3mm. Hair is circular in shape, not flat like grass. Things which are circular or round in shape, do not have 'thickness', they have 'diameter'.The sizes above express the Diameter of Hair. In the Imperial system of measure, human hair varies between 0.002 inch & 0.010 inch Diameter.
The inches in a diameter = 2 X inches in the radius. Or, inches in a diameter = inches in circumference / pi
It is estimated that about 25-30 red blood cells could fit across the diameter of a human hair.
An atom is about 100,000 times smaller than the diameter of a human hair.
What is a "8 inch ball" ? Is 8 inches the diameter ? Then its diameter is 8 inches. Is 8 inches the radius ? Then its diameter is 16 inches. Is 8 inches the circumference ? Then its diameter is about 2.546 inches (rounded).