Problem
Find the volume of a box with length 8 cm, width 5 cm, and height 3 cm.
📝Step-by-Step Solution
1
Recall the formula
Volume of a rectangular prism = length × width × height
V = l × w × h
2
Identify the dimensions
Length (l) = 8 cm, Width (w) = 5 cm, Height (h) = 3 cm
3
Substitute into the formula
V = 8 × 5 × 3
V = 8 × 5 × 3
4
Calculate step by step
8 × 5 = 40, then 40 × 3 = 120
8 × 5 × 3 = 120
5
Add cubic units
Volume is measured in cubic units. The answer is 120 cm³.
V = 120 cm³
✅Final Answer
120 cm³
Volume measures the space inside a 3D object. For rectangular prisms (boxes), multiply all three dimensions. Always use cubic units (cm³, m³, in³, ft³). The volume tells you how many unit cubes fit inside the shape.
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