PLEASE HELP. Brainliest to whoever gives the best answer real-world problems: 1 for the volume of a cone and 1 for the volume of a cylinder.

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?