Find the cross-sectional area of a conductor in millimeters squared when the diameter of the conductor is 25 millimeters. pi must be calculated as 3.14159. (round the final answer to two decimal places.)
The area of the cross section for this case is a circle. Therefore, the area is given by: [tex]A = \pi * r ^ 2
[/tex] Where, r: radius of the circle Substituting values we have: [tex]A = 3.14159 * (25/2) ^ 2
A = 490.8734375 mm ^ 2[/tex] Rounding to two decimal places: [tex]A = 490.87 mm ^ 2
[/tex] Answer: The cross-sectional area of a conductor in millimeters squared is: A = 490.87 mm ^ 2
