Question

Is this correct?
Steel has a density of 7.9 g/cm^3 , what is the mass of a steel sphere with a diameter of 5.00 cm?
\[v = \frac{4}{3}{\pi}r^3\]
\[v = \frac{4}{3}(3.14)(2.5)^3\]
\[v =65.416 ~\text{cm}^3\]

\[D = \frac{ m }{ v }\]
\[7.9 = \frac{ m }{ 65.416}\]
\[m = 516.7864\]

Answer 1

volume of a sphere=(4/3)pi x r^3

Answer 2

oh, i was looking at surface area, oops

Answer 3

edited it, it's correct now right?

Answer 4

yes