A cube has a surface area of 24 ft squared .What is the length of on edge of the cube?

Which situation is an example of an observational study?

A. the following events are mutually exclusive: living in california and watching american idol. true or false b. the number of patients seen by an outpatient practice is an example of a discrete random variable. true or false c.the law of large numbers states that as the number of times an event experiment is conducted increases, the likelihood of the actual probability of an event approaching the theoretical probability decreases. true or false d. measuring the time it takes for patients to enter the operating room is an example of a continuous random variable. true or false

Acircular swimming pool is 24 ft in diameter what is the circumference of the swimming pool