\begin{array} { l } { \text { The thickness of a hollow metallic cylinder } } \\ { \text { is } 2 \mathrm { cm } \text { . It is } 70 \mathrm { cm } \text { long with outer radius } } \\ { \text { of } 14 \mathrm { cm } . \text { Find the volume of the metal } } \\ { \text { used in making the cylinder, assuming that } } \\ { \text { it is open at both the ends. Also find its } } \\ { \text { weight if the metal weighs } 8 \text { g per } \mathrm { cm } ^ { 3 } \text { . } } \end{array}

\begin{array} { l } { \text { The thickness of a hollow metallic cylin

1.	\begin{array} { l } { \text { The thickness of a hollow metallic cylinder } } \\ { \text { is } 2 \mathrm { cm } \text { . It is } 70 \mathrm { cm } \text { long with outer radius } } \\ { \text { of } 14 \mathrm { cm } . \text { Find the volume of the metal } } \\ { \text { used in making the cylinder, assuming that } } \\ { \text { it is open at both the ends. Also find its } } \\ { \text { weight if the metal weighs } 8 \text { g per } \mathrm { cm } ^ { 3 } \text { . } } \end{array}
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