See related links.
you double the radius to find the diameter.
use the existing wires you only need to change the gauge of the wires if amp is 500+ watts if less watts there not much difference in sound quality
The NEC allows 26.
The wire gauge is rated for the current it supports under various temperature and environmental conditions. For typical residential use 10 AWGis rated for 30 amps and 12 AWG is rated for 20 amps. So the quick answer is NO.
Bob tried to find the diameter of the circle.
divide the diameter by 2! doy!
It is normally stamped on the barrel. If it is not, take it to a gunsmith. The smith can use a gauge or micrometer to measure the bore diameter, and tell you the right size ball and patch to use.
Use a tape measure !
use pi (3.14)
To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)
Divide the diameter by 2.
Here's the formula for converting American (or Brown and Sharpe) wire gauge to millimeters:dn = 0.005 mm x 25.4 x 92 36-n/39With this formula, you can convert a wire gauge size to the diameter of the wire in millimeters. The dn is the diameter of the wire in millimeters, as you might have guessed, and the n in the exponent is the gauge of the wire you wish to find the diameter of.Wikipedia has a fine article on this. They have the formula for converting wire gauge to diameter as well as one for calculating cross-sectional area. They also explain where the formula comes from, if you're interested. The formula for converting from diameter to the wire gauge, the inverse of this formula, is also listed, as is a chart. A link is provided for you convenience. Another link is also provided to an online calculator that will let you just put in a diameter or a wire gauge and will do all the work for you. (Note that this calculator works in inches and not millimeters, so you'll have to make a conversion.)Improved Answer By Sandip Vikma :"Above original formula is difficult to calculate. So, you may use bellow derived formula to convert Gauge into MM".dn = 0.127 x 92 [0.9230769-0.025641026n]Where,dn = Thickness in MM.n = Thickness in Gauge.