Question

preciso de ajuda urgente!!!​

Answer 1

Resposta:

04 -

Al = 50π cm²

V ≈ 41,67√3π cm³

05 -

As = 16 π m²

V ≈ 10,67 π m³

Explicação passo a passo:

04 - Al = ? , V = ? , g = ? , r = 5 m , h = 10 m.

g = d = 2 • r ← Equilátero.

Al = r • g • π

Al = r • 2 • r • π

Al = 2 • r² • π

Al = 2 • 5²π

Al = 2 • 25π

Al = 50π cm²

V = (r³ • √3 • π) / 3

V = (5³ • √3 • π) / 3

V = (125√3π) / 3

V ≈ 41,67√3π cm³

05 - As = ? , V = ? , r = 2 m.

As = = 4 • r² • π

As = 4 • 2² • π

As = 4 • 4 • π

As = 16 π m²

V = (4 • r³ • π) / 3

V = (4 • 2³ • π) / 3

V = (4 • 8 • π) / 3

V = (32 • π) / 3

V ≈ 10,67 π m³