Radha is drawing a dot Rangoli (a beautiful pattern of lines joining dots) with chalk powder. She has 9 dots in a row. How many dots are there, if there are 8 rows?

Number of dots in each row = 9
Number of rows = 8
The total number of dots =$\mathrm{Number} \mathrm{of} \mathrm{dots} \mathrm{in} \mathrm{one} \mathrm{row} \times \mathrm{Number} \mathrm{of} \mathrm{rows}$

Therefore, the total number of dots = 9 x 8 =72.