Question

A sphere with a mass of 12g has a radius measuring 2 cm. what is it’s density?

3
A. 0.36 g/cm
3
B. 1.43 g/cm
3
C. 6 g/cm
3
D. 24 g/cm

Answer 1

Explanation:

A. 0.36 g/cm³

Explanation:

Density = mass/volume

We know the mass, but we must calculate the volume.

The formula for the volume of a sphere is

V = ⁴/₃πr³

r = 2 cm

V = ⁴/₃π × 2³

V = (4π×8)/3

V = (32π)/3

V = 33.5 cm³

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Calculate the density

Density = 12/33.5

Density = 0.36 g/cm³

The density of the sphere is 0.36 g/cm³.