For a cube, volume is calculated as which expression?

For a cube, volume is calculated as which expression?

• A. V = l x w x h
• B. V = l x h
• C. V = l x w
• D. V = l + w + h

Answer: (A)

Volume is the amount of space inside a solid. For a cube, you describe its size with three measurements along perpendicular directions: length, width, and height. The space inside is found by multiplying those three dimensions together, so V = l × w × h. Since all edges of a cube are equal, you could also write V = s^3 if you use a common side length s, but with these variables V = l × w × h is the correct expression. The other choices mix only two dimensions, giving area, or add the dimensions, which doesn’t represent the space inside the cube.

Volume is the amount of space inside a solid. For a cube, you describe its size with three measurements along perpendicular directions: length, width, and height. The space inside is found by multiplying those three dimensions together, so V = l × w × h. Since all edges of a cube are equal, you could also write V = s^3 if you use a common side length s, but with these variables V = l × w × h is the correct expression. The other choices mix only two dimensions, giving area, or add the dimensions, which doesn’t represent the space inside the cube.