[tex]\begin{gathered} \text{ Volume of a cylinder = }\pi r^2h \\ \text{where r=radius, h=height} \\ \text{ For the question, r=10in, h=20in} \\ \text{ } \end{gathered}[/tex][tex]\begin{gathered} \text{ Volume =3.14 x 10 x10 x20} \\ \text{ Volume of the cylinder= 6280 in}^3 \end{gathered}[/tex]
