The formula to find the volume of a cylinder is:
[tex]\begin{gathered} V=\pi r^2h \\ \text{ Where} \\ V\text{ is the volume} \\ r\text{ is the radius} \\ h\text{ is the height} \end{gathered}[/tex]
In this case, we have:
[tex]\begin{gathered} r=3in^{} \\ h=7in \\ \pi\approx3\Rightarrow\text{ The symbol }\approx\text{ is read 'approximately'} \end{gathered}[/tex][tex]\begin{gathered} V=\pi r^2h \\ V\approx3(3in)^2(7in) \\ V\approx3(9in^2)^{}(7in) \\ V\approx189in^3 \end{gathered}[/tex]
Therefore, the volume of the cylinder is approximately 189
