A solid aluminum cube has sides each of length l. A second cube of the same material has sides four times the length of the first cube, i. E., 4 l. What is the weight of the second cube

The formula to find the volume of cube

cube = s^3

Therefore volume is equal to I^3

The second cube has 4x the First cube

4 * (I^3) = 4 * I^3

Total volume of the second cube = 4I^3 cm3

Fact: the density (mass : volume) of aluminium is 2.40g/cm3

Making mass the subject of the formula:

D = M : V

(Times volume to remove deno minator)

Mass = Density * Volume

Mass = 2.40 * 4I ^3

Mass = 8.40I^3

By physics

weight = m * g

where

M = mass

g = acceleration due to gravity ( = 9.8)

W = 8.40 I^3 * 9.8

Weight of aluminium = 82.32I^3