Trapezoid Area
Find trapezoid area and the length of its midline.
Your numbers
Area
Use consistent units. The result follows the assumptions you enter.
Scenario comparison
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Formula
Use A = (a+b)h/2 and m = (a+b)/2. a and b are parallel side lengths and h is perpendicular height in the same unit. m is midline length.
Find trapezoid area and the length of its midline.
Worked example
- First parallel side (m)
- 8
- Second parallel side (m)
- 5
- Height (m)
- 4
- Area
- 26 m²
- Midline
- 6.5 m
Scope and limitations
Use consistent units. The result follows the assumptions you enter.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: 5159686ad35b · Example checked: