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: Find volume of one cube

The volume formula for a cube is $V = s^3$, where $s$ is the side - length. Given $s = 2$ cm, then $V_1=2^3=8$ $cm^3$.

Step2: Find volume of 8 cubes

Multiply the volume of one cube by 8. So $V_{total}=8\times V_1$. Substitute $V_1 = 8$ $cm^3$ into the formula, we get $V_{total}=8\times8 = 64$ $cm^3$.

Answer:

D. 64