............................................................................................
R^2=52^2-48^2
R=20cm
V=1/3pR^2h
V=1/3*p*400*48
V=6400p
S=pR(R+l)
S=p*20(20+52)
S=1440p
............................................................................................
R^2=52^2-48^2
R=20cm
V=1/3pR^2h
V=1/3*p*400*48
V=6400p
S=pR(R+l)
S=p*20(20+52)
S=1440p