Anumber a is more than 6 write it as an inequality

When turned about its axis of rotation, which shape could have created this three-dimensional object?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?