Question

a cube has a side length of 2 centimeters (cm). what is the total volume, in cm³, of 8 of these cubes?
a 8
b 16
c 48
d 64

Explanation:

Step1: Calculate the volume of one cube

The volume formula of a cube is \(V = s^3\) (where \(s\) is the side - length). Given \(s = 2\mathrm{cm}\), then \(V_1=2^3=8\mathrm{cm}^3\).

Step2: Calculate the total volume of 8 cubes

The total volume \(V = 8\times V_1\). Substitute \(V_1 = 8\mathrm{cm}^3\) into the formula, we get \(V=8\times8 = 64\mathrm{cm}^3\).

Answer:

D. 64