Can anyone please help me with this problem ?

Explanation:

We are given the diagram of a triangle, so we know:

From the diagram:

By Pythagorean Theorem:

So this is a 45-45-90 triangle. Thus:

So:

Also, by Pythagorean Theorem:

Finally:

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.