Mathematics help pls giveing 30 points

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.