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

For r rows she will have = 9x r = 9r dots

For 8 rows she will have = 9x 8 = 72 dots

For 10 rows she will have = 9 x 10 = 90 dots

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