Radha is drawing a dot Rangoli. she has 10 dots in a row how many dots will her rangoli have for x rows? how many dots are there. If there are 8 rows? how many dots are these. If there are 10 rows?
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Explanation:
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 =9×8=72
Total number of dots in 10 rows =9×10=90
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