Sпол= 2Sосн + Sбок = 264 pi;
h = R+10;
Sосн = 2(pi* R^2);
Sбок = 2 piR* h= 2 pi R*(R+10);
2piR^2 + 2 pi R*(R+10) = 264 pi;
R^2 + R(R+10)= 132;
2R^2 + 10R - 132 = 0;
D = 1156= 34^2;
R = 6.
Vцил = S * h= pi *R^2 * h;
h = R+10= 6+10 = 16.
Vцил. = pi* 36 * 16 = 576 pi