Aspherical water tank holds 10500ft^3. what is the diameter of the tank? use v=pie/6*d^3

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

What is the radius of the cone in the diagram? round your answer to the nearest whole number

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)