Question

10. Find the mass density of a ball with 22.0 g and a radius of 0.875 cm.

Answer 1

Mass (m) = 22.0 g

Radius (r) = 0.875 cm

Density (d) = ?

First find ( volume) ;

`v = (4)/(3) \pi \: {r}^(3) \\ \\ v = (4)/(3) * 3.14 * ( {0.875)}^(3) \\ \\ v = (4)/(3) * 3.14 * 0.66992187 \: {cm}^(3) \\ \\ v = 2.8 \: {cm}^(3)`

`Density = (mass)/(volume) \\ \\ d = (m)/(v) \\ \\ d = (22)/(2.8) \\ \\ d = 7.857 \: \frac{g}{ {cm}^(3) }`

I hope I helped you^_^