Radha is drawing a dot rangoli . beautiful pattern of lines of joining dots with chalk powder. she has nine 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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Answered by
20
Number of dots in a row = 9
Number of rows is a variable r.
Total number of dots in r rows = number of dots in one row × number of rows
= 9r
Total number of dots in 8 rows = number of dots in one row × number of rows
= 9 × 8 = 72
Total number of dots in 10 rows = number of dots in one row × number of rows
= 9 × 10 = 90
Number of rows is a variable r.
Total number of dots in r rows = number of dots in one row × number of rows
= 9r
Total number of dots in 8 rows = number of dots in one row × number of rows
= 9 × 8 = 72
Total number of dots in 10 rows = number of dots in one row × number of rows
= 9 × 10 = 90
Answered by
5
Step-by-step explanation:
Number of rows= r rows
Number of dots in a row= 9 dots
Total number of dots will be= 9×r
= 9r
Number of dots in 8 rows will be= 9×8
=72 dots
Number of dots in 10 rows= 9×10
= 90 dots
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