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The rectangular prism has six faces that are rectangles, and has same cross-section.

Rectangular prism Formulas

Volume: V = lwh

Surface Area: S = 2(lw + lh + wh)

Space Diagonal: d = √(l² + w² + h²)

For example, when h = 2, l = 3, w = 4

1. To calculate d, use the following formula: √(l² + w² + h²). When you substitute l, w, and h for their values, you get √(3² + 4² + 2²), which equals 5.38516 m.
2. To calculate S, use the following formula: 2(lw + lh + wh). When you substitute l, w, and h for their values, you get 2(3(4) + 3(2) + 4(2)), which equals 52 m².
3. To calculate V, use the following formula: lwh. When you substitute l, w, and h for their values, you get 3(4)(2), which equals 24 m³.