Q. 7. 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 will her Rangoli have for rows? How many dots are there if there are rows? If there are rows?
Number of rows = r
Number of dots in each row = 9 dots
Thus, the total number of dots = 9r
When the number of rows is 8, then the total number of dots are dots.
When the number of rows is 10, then the total number of dots are dots.