Solving Density Problems Video Lessons

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Problem: Two spheres are cut from a certain uniform rock. One has radius 4.50 cm. The mass of the other is five times greater. Find its radius.

FREE Expert Solution

To solve this problem, we first need to define density. 

Density is the ratio of mass and volume of a substance. 

Density is expressed as:

ρ=mV, where ρ is the density, is the mass, and V is volume. 

From this equation, we can get the mass of the sphere to be:

m=ρV

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Problem Details

Two spheres are cut from a certain uniform rock. One has radius 4.50 cm. The mass of the other is five times greater. Find its radius.

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