The chairs in a hall are arranged in $2$ sections. Each section has $3$ columns and $6$ rows. How many people can be seated in the hall?

The correct option is B $36$
The chairs are divided into $2$ sections.
Let’s find the number of chairs in one section.
In one section, there are $3$ columns and $6$ rows.
Number of chairs in one section = number of rows $\times$ number of columns
$=6\times 3=18$ chairs
There are $18$ chairs in one section and there are $2$ such sections.
Total number of chairs = number of chairs in one section $\times$ number of sections
$=18\times 2=36$
Therefore, a total of $36$ people can be seated in the hall.