Dimensions of a circular flower garden a flower garden has the shape pictured below that diameter of the outer circle is twice the diameter of the inner circle the links of the walkways are each 6 ft long what is the diameter of the inner

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?