The volume of a cylinder can be found by multiplying the area of its base by its height. A cylinder is 10 inches tall and has a volume that is less than 400 cubic inches. Which inequality can be used to determine the base area, B, of the cylinder? B >400 10 O B 400 10B Please help ​

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?