Sбок поверх=2×n×R×H
R2=8R1
H1=H2=H
S1=2×n×R1×H
S2=2×n×8R1×H
S2/S1=(2×n×8R1×H) /(2×n×R1×H)=8
ответ : S2/S1=8
v=π×r²×h
r1=4r2
h2=4h1
v1/v2=πr1²×h1)/(πr2²×h2)
v1/v2=16r2²×h1)/(r2²×4h1)
v1/v2=16/4=4
ответ: 4
