Question

an aluminum ball and a lead ball each have a radius of 1.2 centimeters. which weighs more?how much more?
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Answer 1

Answer:

The lead ball

Step-by-step explanation:

First, calculate the volume of the spheres:

$v=\frac{4}{3}\pi (r)^3=\frac{4}{3}\pi (1.2)^3=7.24 cm^3$

Then, multiply this value by the densities of aluminum and lead.

Aluminum:

$W_A_l=2.7g/cm^3*7.24cm^3=19.55g$

Lead:

$W_P_b=11.34g/cm^3*7.24cm^3=82.1g$

The lead sphere is about 62 grams heavier.