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Jim paints the surface of a shelf. the surface has an area of 90 square inches. the width of the shelf is 6inches. what is the length of the shelf. please show me how to work

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\begin{gathered} \text{area}=90in^2 \\ w=\text{width}=6in \\ l=\text{length} \\ \text{area}=\text{ w}\cdot l \\ l=(area)/(w) \\ l=(90in^2)/(6in) \\ l=15in \\ \text{The length is }15in \\ \text{Question 2} \\ \text{area}=48m^2 \\ \text{l}=8\text{m} \\ w=? \\ w=(area)/(l) \\ w=(48m^2)/(8m) \\ w=6m \\ \text{The width is 6 meters} \end{gathered}

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