Area of a Trapezium Calculator
Calculates the area of a trapezium from the measurements you enter. Use any unit, as long as all inputs use the same one.
Result
- Area
- 32
How to use the area of a trapezium calculator
- Enter the parallel side a.
- Enter the parallel side b.
- Enter the height.
- The results update as you type, or press Calculate.
- Read the area first, then the supporting figures below it.
Formula
½(a + b) × h
Worked example
For example, with these inputs:
- Parallel side a: 6
- Parallel side b: 10
- Height: 4
the calculator returns:
- Area: 32
Background
Each formula has assumptions built in. Area formulas assume flat shapes, volume formulas assume regular solids and statistical measures assume the data you enter is the data you want to describe. Knowing the assumptions helps you pick the right tool.
These calculations appear throughout the Singapore syllabus, from primary school percentages and fractions to secondary school algebra and geometry. Understanding the formula makes problem sums easier because you can recognise which quantity is missing.
Frequently asked questions
How does the area of a trapezium calculator work?
It applies this formula: ½(a + b) × h
Can I use any units?
Yes, as long as every input uses the same unit. The answer will be in that unit (squared for areas, cubed for volumes).