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It is 25cm
2.35
92mm
Times the diametre by pi
d = 11.46 inches
diametre of circle
The diametre of Pluto is 2,320km
For round duct, measure from one side to the other, and you have the diameter.
The average diametre of the planet Mars is approximately 6,786km.
Diametre is, since diametre = 2*radius
Since earth is not round but elliptical in shape, it's diameter at equator is 12,756km and it's diameter at poles is 12,712km.
51,118
pi * diameter
About 12104 Km.
15 km
dx
It is 25cm