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Los datos que tienes son:
v = 300 pies
h = 12 pies
r = ?
A lateral = ?
Calculamos el radio
v = π * r² * h
300 pies = (3,1416) * r² (12 pies)
(300 pies) / (3,1416) = r² (12 pies)
95,49 pies = r² (12 pies)
(95,49 pies) / (12 pies) = r²
7,95 pies = r²
√7,95 pies = r
2,82 pies = r
r = 2,82 pies
Calculamos el área lateral que nos pide.
A lateral = 2 π r * h
A lateral = 2 (3,1416) (2,82 pies) (12 pies)
A lateral = 212,62 pies
Respuesta.
A lateral = 212,62 pies