the volume of a cylinder can be calculated using the formula v=π·r^2h, where r is the radius of the base, and h is the height of the cylinder. express the variable r in terms of v and h.

: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?

For the inequality |c| < |d| to be true, which of the following must be true?

Harold wrote this equation to model the level of water in a pool over time. the variable x represents time in hours. f(x) = 3,500 - 225x which statements about the situation are true? check all that apply. the water level is rising. the water level is falling. the initial level of water in the pool was 3,500 units. the initial level of water in the pool was 225 units. the pool was empty after 14 hours. the water was 2,600 units high after 4 hours.