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 ?
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Hay friend!
Dots in 1 row = 9
Dots in 8 row = 9*8=72
Dots in 10 row = 9*10=90
Dots in 1 row = 9
Dots in 8 row = 9*8=72
Dots in 10 row = 9*10=90
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