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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? |
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Answer» Number of dots in 1 row = 9 Number of rows = r Total number of dots in r rows = Number of rows × number of dots in a row = 9r Number of dots in 8 rows = 8 × 9 = 72 Number of dots in 10 rows = 10 × 9 = 90 |
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