what is apparent diameter?
150417
The apparent diameter of a celestial object is the diameter measured by an observer at a specific distance from the object. The smaller the distance between the observer and object, the greater the apparent diameter. Apparent diameters are often expressed as angular diameters.
348932
It's just 2 * pi, or 6.28 inches because it's the difference of the diameter by 2 inches.
202659
What are No. 27"s?\nrivernan
409033
a vernier caliper should do the trick.  it can measure the inner and outer diameter
333891
The generalized definition of a diameter is the greatest Euclidean distance between any two points of a set.  For the case of a square, this is for opposite corners of the object.  This distance can be easily demonstrated to be:\n\nsqrt(d)*a\n\nwhere a is the length of one side of the square and d is the dimensionality of the square.  For a 2 dimensional square as typically drawn on paper, it's just a*sqrt(2).
917141
the radius is half the diameter.
877827
Is that a single diameter?  Your statement is ambiguous.\n\nAssuming that it is, find the distance between those two points.  Halfway between the two points is the center
57469
It's half the diameter.
130046
Half of the diameter.\n\nor\n\nMeasure around it.  Divide that number by 3.14.  Then divide by 2.
1070837
9".\n\nThis data has been compiled with a sample size of 1.
175063
2.54 centimeters in an inch\n25.4 milimeters in an inch
1134444
Diameter is 3 inches in length.
1088174
area = pi times the radius squared\n\nThe diameter is twice the radius.\n\nSo divide the diameter in two, square that and multiply by pi.
1143073
2-3 mm diameter would be my guess, assuming that it is still alive. If squashed, much smaller.
165284
What is the radious or diameter?
684908
About 1/30" of an inch, or 0.8 mm
470650
diameter = 9 inches\n\nRadius = 4.5 inches\n\npi * r^2 = 3.14159 * 4.5^2 = 63.61725...