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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?

Pawan Prajapati , 3 Years ago
Grade 12
anser 1 Answers
Harshit Singh

Last Activity: 3 Years ago

Dear Student

Number of dots in a row = 9
Number of rows = r
Total number of dots in r rows = Number of dots in a row × number of rows = 9r
Number of dots in 8 rows = 8 × 9
= 72
Number of dots in 10 rows = 10 × 9
= 90

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