Question 948168
50 plates 0.5 thick would form a length of {{{50(0.5)=25}}} for the cylinder.
{{{SA=2(pi*R^2)+2pi*R*L}}}
{{{SA=2(pi(7)^2)+2pi*7*25}}}
{{{SA=98pi+350pi}}}
{{{SA=448pi}}}{{{cm^2}}}
and
{{{V=pi*R^2*L}}}
{{{V=pi*7^2*25}}}
{{{V=1225pi}}}{{{cm^3}}}