The radius of a circular sign is
12
12 inches. Equal parts of the sign are painted
red
red and
yellow
yellow. How many square inches are painted each color? Use 3.14 for
pi
π.

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?