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liberstina [14]
3 years ago
9

I will mark Brainliest

Mathematics
2 answers:
gladu [14]3 years ago
8 0
I think its  A = 4π(7)2
valentinak56 [21]3 years ago
8 0
I think that the answer is the last one, 4 pi (7)2 because if the radius of the sphere is 7 feet than this equation works the best as 4 * pi * 7^2 = 49*4*pi=196 pi= 615.75ft^2 or 615.75 ft squared.
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Lera25 [3.4K]

Answer:

La masa del recipiente vacío es 1,2146 kg.

Step-by-step explanation:

La densidad se define como la propiedad que tiene la materia, ya sean sólidos, líquidos o gases, para comprimirse en un espacio determinado. En otras palabras, la densidad es una magnitud que permite medir la cantidad de masa que hay en determinado volumen de una sustancia. Entonces, la expresión para el cálculo de la densidad es el cociente entre la masa de un cuerpo y el volumen que ocupa:

densidad= \frac{masa}{volumen}

Entonces la masa puede ser expresada como:

masa= densidad*volumen

En este caso:

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Reemplazando:

masa= 1000 \frac{kg}{m^{3} } * 7,854*10⁻⁴ m³

masa=0.7854 kg

Si la masa del recipiente lleno es de 2 kg, entonces se le resta la masa de agua calculada:

2 kg - 0,7854 kg= 1,2146 kg

Entonces,<u><em> la masa del recipiente vacío es 1,2146 kg.</em></u>

<u><em> </em></u>

<u><em></em></u>

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Step-by-step explanation:

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