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DiKsa [7]
3 years ago
8

Jerónimo ha fabricado pequeñas pelotas típicas como la que se muestra en la figura 1 (en mi libro aparecen cuatro pelotas). Para

cada pelota se emplean 216 centímetros cuadrados de tela típica determina el radio de la pelota y aproxima su valor al decimal cercano.
Expresión r = área superficial / 4 * pi elevado al cubo, permite determinar el radio de cada pelota. Les pido ayuda con esta tarea
Mathematics
1 answer:
Luden [163]3 years ago
8 0

Answer:

r = 4,2 cm

Step-by-step explanation:

El área de una pelota es la siguiente:

A = 4\pi r^{2}   (1)

En donde:

A: es el área superficial = 216 cm²

r: es el radio =?

Resolviendo la ecuación (1) para r podemos determinar el radio de cada pelota:

r = \sqrt{\frac{A}{4\pi}} = \sqrt{\frac{216 cm^{2}}{4\pi}} = 4,2 cm

Por lo tanto, el radio de cada pelota es de 4,2 cm.

Espero que te sea de utilidad!

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