Answer:
,
![s\approx 376.991\,cm](https://img.qammunity.org/2021/formulas/spanish/high-school/bhetwbmedngo6ixarz5abubljuey03c72g.png)
Step-by-step explanation:
El área total de la lamina es
(The total area of the sheet is
). La función asociada al área sobrante es (The function associated with the remaining area is):
![A_(r) = 2400\,cm^(2) - 6\cdot \pi \cdot r^(2)](https://img.qammunity.org/2021/formulas/spanish/high-school/rsxxw8tp3kmr7xa32it2hua7496mhryypa.png)
El radio máximo está asociado con la longitud más corta de la lámina. Asúmase que
(The maximum radius is associated with the smallest length of the sheet. Let assume that
):
![A_(r) = 2400\,cm^(2) - 6\cdot \pi \cdot (10\,cm)^(2)](https://img.qammunity.org/2021/formulas/spanish/high-school/txni6ghhmluq9bedc4df1nncz7nkou4kuy.png)
![A_(r) \approx 515.044\,cm^(2)](https://img.qammunity.org/2021/formulas/spanish/high-school/h832afdl7emg98ox1xjfrbngg8mvd2n2oc.png)
La longitud necesaria de hule de protección es igual a: (The required length of proctection rubber is equal to)
![s = 12\cdot \pi \cdot (10\,cm)](https://img.qammunity.org/2021/formulas/spanish/high-school/dy2sjoaupcmhzo48ykedbknzaevben5371.png)
![s\approx 376.991\,cm](https://img.qammunity.org/2021/formulas/spanish/high-school/bhetwbmedngo6ixarz5abubljuey03c72g.png)