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Pepsi [2]
2 years ago
12

Para armar un escritorio, Eduardo tendrá que usar 20 tarugos, los que debe cubrir completamente con una capa de pegamento. Él ca

lcula que debe tener pegamento suficiente para cubrir 52 000 mm2 de la superficie de los tarugos usados. Sin embargo, su compañera Francisca le dice que esa cantidad de pegamento no alcanzará para cubrir todos los tarugos. Quién tiene la razón? Marca tu respuesta. Marco Francisca Justifica tu respuesta calculando la superficie total de los tarugos que se debe cubrir con pegamento
Mathematics
1 answer:
Degger [83]2 years ago
4 0

El área superficial total de los veinte tarugos es mayor que el área superficial cubierta por el pegamento.

<h3>Como determinar si la superficie cubierta por el pegamento es suficiente</h3>

En esta pregunta debemos calcular el área superficial total de los tarugos (A_{s}), en milímetros cuadrados, y comparar el resultado con la cifra afirmada por Eduardo. El área superficial total es:

A_{s} = 20\cdot \pi\cdot (5\,mm)^{2}\cdot (80\,mm)

A_{s} \approx 125663.706\,mm^{2 }

En consecuencia, el área superficial total de los veinte tarugos es mayor que el área superficial cubierta por el pegamento. Francisca tiene la razón. \blacksquare

<h3>Observación</h3>

El enunciado omite las dimensiones <em>geométricas</em> de cada tarugo (5 milímetros de radio y 80 milímetros de longitud).

Para aprender más sobre áreas, invitamos cordialmente a ver esta pregunta verificada: brainly.com/question/391394

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