Let the initial length and width Kellogg's rectangular Pop-Tarts be represented as l and b
The area of the initial rectangular Pop-Tarts will be
[tex]\begin{gathered} A_{rec\tan gle}=length\text{ }\times width \\ A_{i\text{nitial}}=l\times b \end{gathered}[/tex]If the new length is increased 10% of the initial length, then the new length L will be
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