The longest distance across a circle is its diameter
In basic terms...no. A diameter only applies to circles or spheres. The diameter is the distance across the middle at the widest point and the radius is half of the diameter.
The circumference of a circle (the distance around the perimeter) is calculated by mulitplying a constant value called Pi (which equals 3.14 and is true for all circles), times the circle's diameter (distance across the center).Therefore, to answer your question, C = Pi x D, or 3.14 x 20in, or 62.8 inches.
Tangent circles are circles that touch one another without crossing. The distance between the centres of the circles must be equal to the difference or the sum of their radii.
nothing
45.6 across
All circles are plane curves drawn by a point that rotates 360 degrees at a constant distance from a fixed point.
roughly 1700 miles
When they have the same centre. As a consequence, the distance between the two circles, along any common radial ray, is a constant.
The distance half way across a circle is the circle's radius.radias
the distance across the middle is the radius and whole distance across it is the diameter
constructive interference
A 45-meter object has a diameter of 45 meters. The diameter is the distance across the widest point of a circle or sphere, equal to the specified length of 45 meters in this example.