In AOPQ, p = 9.5 inches, q = 7.6 inches and 20=31°. Find the area of AOPQ, to the
nearest 10th of a square inch.

Your pictures are upside down

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.