Bonjour,
1)
[tex]V= \frac{1}{15}\pi h(3r^2+4rR+8R^2)\\\\
V= \frac{1}{15}\pi \times 93(3\times 27^2+4\times 27 \times 34+8\times34^2)\\\\
\boxed{V = \frac{468 \ 317}{5}\pi \ cm^3\approx 294 \ 252 \ cm^3}[/tex]
2)
Si r = R
[tex]V= \frac{1}{15}\pi h(3r^2+4r\times r+8r^2)\\\\
V= \frac{1}{15}\pi h\times 15r^2\\\\
\boxed{V=\pi r^2 h}[/tex]
