A cylinder has a radius of 4 feet and a height of 6 feet. Which of the following can be used to calculate the volume of a cone that fits exactly inside the cylinder? (5 points)
Оа
1
3 (3.14)(4266
Ob
(3.14)426)
1
3 (3.14)(62)(4)
Od
(3.14)(624)

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?