What is the area of a circle whose radius is ten meters

Area of circle is pi times (radius)^2

So area is pi * (10 meter)^2
= 100pi square meters

or approximately 314.16 square meters

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.