Math

Rectangular Prism Calculator

Volume, surface area and diagonal of a box.

Parameters Live Compute
Calculated Output
Volume 24
Surface area 52
Space diagonal 5.385
Formula: V = lwh ; SA = 2(lw+lh+wh)
Step-by-Step Breakdown
1. Values used:
2. Length = 4
3. Width = 3
4. Height = 2
5.
6. Volume = Length x Width x Height = 4 x 3 x 2 = 24
7. Surface area = 52
8. Space diagonal = 5.385
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All measurements of a rectangular box (cuboid).

The math behind it

Volume = l × w × h. Surface area = 2(lw + lh + wh). Diagonal = √(l²+w²+h²).

Worked Example

4×3×2 → volume 24, surface 52.

Frequently Asked Questions

Cube?

A prism with all sides equal — use the Cube calculator.

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