Rectangular Pyramid Volume Calculator

A rectangular pyramid is a geometric solid with a rectangular base and four triangular faces that converge at a single vertex. This calculator computes the volume from the length, width and height of the pyramid.

Rectangular pyramid volume formula

The volume is one-third of the base area multiplied by the height:

V = (1/3) × l × w × h

Where l is the base length, w is the base width and h is the perpendicular height from the base to the vertex.

Example 1: pyramid with integer dimensions

Problem: A pyramid has base l = 12 cm, w = 8 cm and height h = 10 cm.

1. Base area:
   • A_base = 12 × 8 = 96 cm².
2. Volume:
   • V = (1/3) × 96 × 10 = 320 cm³.

Answer: V = 320 cm³.

Example 2: pyramid with decimal measurements

Problem: A pyramid has base l = 5.5 m, w = 3.2 m and height h = 4.8 m.

1. Base area:
   • A_base = 5.5 × 3.2 = 17.6 m².
2. Volume:
   • V = (1/3) × 17.6 × 4.8 ≈ 28.16 m³.

Answer: V ≈ 28.16 m³.

Utilisations courantes

• Computing volumes of pyramidal structures in architecture and engineering.
• Estimating material quantities for pyramidal roofs and tents.
• Solving solid geometry problems in mathematics.
• Determining the capacity of inverted pyramid-shaped containers.
• Calculating volumes of earth mounds or construction material piles.
• Designing decorative elements and pyramidal sculptures.

Common mistakes when calculating pyramid volumes

• Forgetting the 1/3 factor and computing as if it were a rectangular prism.
• Using the triangular face height instead of the perpendicular pyramid height.
• Confusing base dimensions with the lateral edge lengths.
• Mixing units between length, width and height.

Conseil pro

The volume of any pyramid is always one-third of the volume of the prism with the same base and height. This universal rule applies regardless of the base shape (triangular, square, pentagonal, etc.).