ACT Math

Volume of a cube on the ACT

October 13, 2026 · 5 min read

Volume of a cube is s³. Surface area is 6s². Do not swap them. Area and volume as a set are in area and volume.

One length, three factors

Side 4 gives volume 64. A rectangular prism uses three lengths, in volume of a rectangular prism. Area of a rhombus is a different leftover, in area of a rhombus.

The short list is in ACT Math formulas.

The bottom line

Cube volume: s³. Surface is 6s².

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