Una columna de concreto que tiene un diámetro de 3 pies y una altura de 20 pies requiere _____ yardas cúbicas de con- creto. Redondee su respuesta a la 1 ?4 yarda cúbica más cer- cana.

a. 51
/4
b. 73
/4
c. 141
/2
d. 211
/4


Answer: A

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El nombre del gas contenido dentro de un cilindro de oxígeno se encuentra impreso, etiquetado o pintado en el/la _____ de cada cilindro.

a. parte de arriba b. en el hombro c. parte de abajo d. lado

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