Răspuns :
Răspuns:
R = 3 cm, G = 8 cm
Aria laterală = 2πRG = 2π • 3 • 8 = 48π cm²
Aria totală = 2πR(G + R) = 2π • 3 • (8 + 3) = 66π cm²
Volumul = πR²G = π • 3² • 8 = 72π cm³
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[tex]\it \mathcal{A}_\ell=2\pi RG=2\pi\cdot3\cdot8=48\pi\ cm^2\\ \\ \\ \mathcal{A}_{t}=2\pi R(R+G)=2\pi\cdot3(3+8)=66\pi\ cm^2\\ \\ \\ \mathcal{V}=\pi R^2G=\pi\cdot9\cdot8=72\pi\ cm^3[/tex]