Carla packed 200 1-centimeter cubes into a box with no gaps or overlaps. What is the volume of the box ?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

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?

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18