Given
A roll of gasket material is 18 in wide.
To find: What length is needed to obtain 20 sq ft of the material?
Explanation:
It is given that,
A roll of gasket material is 18 in wide.
Also, the area of the material is 20 sq ft.
Since
[tex]1\text{ }sq.ft=144in^2[/tex]Then,
[tex]\begin{gathered} Area\text{ }of\text{ }the\text{ }gasket\text{ }material=20\text{ }sq.ft \\ =20\times144\text{ }in^2 \\ =2880\text{ }in^2 \end{gathered}[/tex]Therefore,
[tex]\begin{gathered} Area=2880\text{ }in^2 \\ l\times w=2880 \\ l\times18=2880 \\ l=\frac{2880}{18} \\ l=160\text{ }in \end{gathered}[/tex]Hence, the length of the gasket material is 160 in.
