please help- a smell sewing is shaped like a rectangular prism. the base of the case is 2 1/2 inches wide and 2 3/4 inches long . the height of the case is 3 1/2 inches.

If eh = hg and hg=16, find the diameter of k

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?