What is theLongest measurement you can make an a box that is 16 inches Long 8 inches wide and 8 inches tall

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?

I'm confused on this could anyone me and show me what i need to do to solve it.

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?