Răspuns:
[tex]aria \: laterala = \pi \: r \: g \\ \\ aria \: laterala = \pi \times 18 \times 24 \\ \\ aria \: laterala = 432\pi[/tex]
[tex]aria \: totala = aria \: laterala + aria \: bazei \\ \\ aria \: bazei = \pi \: r ^{2} \\ \\ aria \: bazei = 18 {}^{2} \\ \\ aria \: bazei = 324\pi \\ \\ \\ aria \: totala = 432\pi + 324\pi = 756\pi {}^{2} [/tex]
[tex]volum = \frac{\pi \: r {}^{2}h }{h} \\ \\ volum = \: \frac{\pi324 \times 24}{3} = \frac{\pi \: 7776}{3} = \pi \: 2592[/tex]
