A hemispherical container, 31.5 inches in diameter, is filled with a liquid at 20°C and weighed. The liquid weight is found to be 1727 ounces. What is the density of the fluid in kg/m^3?

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AMB000

Answer:

[tex]\rho=365.6Kg/m^3[/tex]

Explanation:

31.5 inches are 0.8m.

1727 ounces are 49Kg.

Our hemispherical container has a volume half of a sphere with diameter d=0.8m, or a radius r=0.4m. Since the formula for the volume of sphere is

[tex]V_s=\frac{4\pi r^3}{3}[/tex]

our volume will be:

[tex]V=\frac{1}{2}\frac{4\pi r^3}{3}=\frac{2\pi r^3}{3}[/tex]

And our density can be calculated as

[tex]\rho = \frac{m}{V}=\frac{3m}{2\pi r^3}=\frac{3(49Kg)}{2\pi (0.4)^3}=365.6Kg/m^3[/tex]