Question

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 r rows? How many dots are there if there are 8 rows? If there are 10 rows?​

Answer 1

Answer:

Complete step-by-step answer:

Given:

The number of dots for each row is x=9

.

We know the equation to find the number of dots in the Rangoli for r rows is,

x×r

On Substituting the values in the above equation, we get the value as,

9r

We also know the equation to find the number of dots in a 8 row Rangoli is,

8×x

Substituting the values in the above equation, we get the value of the number of dots for 8 rows.

8×x=8×9=72

Therefore, the number of dots in 8 rows are 72 dots.

We also know the equation to find the number of dots in 10 row Rangoli is,

10×x

On Substituting the values in the above equation, we get the value of number of dots for 10 rows

10×x=10×9=90 .