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.)

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

(a. s."similarity in right triangles"solve for xa.) 10b.) 20c.) 14.5d.) [tex] 6\sqrt{3} [/tex]