If side of cube is doubled, volume becomes how many times?

Explanation

• Volume of a cube is side³, so doubling the side multiplies the volume by 2³ = 8.
• Try real numbers: a 3 cm cube holds 27 cm³ while a 6 cm cube holds 216 cm³, which is 8 times as much.
• Option A 2 is the factor for length alone, because only one dimension is compared there.
• Surface area behaves differently and grows by 2² = 4, since area uses two dimensions instead of three.
• General rule: scaling every side by k changes the volume by k³ and the surface area by k².