Trapezoidal Prism Lateral Area Calculator

Calculate the 4 vertical side walls of a trapezoidal prism solid ( $S_{\text{lat}} = (a + b + 2c) \cdot H$ ).

Wall Geometry

Select Base Cross-Section

Unit:

Base Polygon

Top Base (a)cm

Bottom Base (b)cm

Trap Height (h_t)cm

Prism Height (H)cm

3D Trapezoidal Prism Lateral AreaExcludes Top & Bottom

Lateral Area

S_{\text{lat}} = P \cdot H

--

cm²

Trapezoid Base Perimeter (P)

--

cm

Number of Lateral Side Faces

4

faces

Explore Geometry Tools

Select a 3D prism shape to calculate volume, surface area, and step-by-step formulas.

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V = l \cdot w \cdot h

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V = a^3, \; S = 6a^2

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V = \frac{1}{2} b h_b H

Specialized Metrics

Solve directly for a specific property across multiple prism types simultaneously.

V = B \cdot H

Compute capacity & liquid volumes across 6 solid prisms.

S = 2B + S_{\text{lat}}

Total outer surface with 2D net and scrap margin estimation.

S_{\text{lat}} = P \cdot H

Wall & sides surface area excluding top/bottom bases.

B = \frac{V}{H}

Cross-sectional polygonal area forward & inverse solver.