The base of a triangular prism is a right triangle with a base of 6 feet, a height of 8 feet, and a third side length of 10 feet. The height of the prism is 10 feet. Find the surface area of the prism.

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?