Question 397970
{{{R=4, h=12}}}
{{{S=S1+S2}}}
{{{S1=pi*R^2}}}, {{{S1=pi*4^2=50.27}}}
{{{S2=pi*R*L}}}
{{{L=sqrt(R^2+h^2)}}}, {{{L=sqrt(4^2+12^2)=sqrt(160)=12.65}}}
{{{S2=pi*R*L=pi*4*12.65=158.95}}}
{{{S=S1+S2=50.27+158.95=209.22}}}
{{{S=209.22}}}