Spike's Calculators

Area and Perimeter

Right-Angled Trapezium

Spike VM

Calculate the area and perimeter of a right-angled trapezium. In a right-angled trapezium, the angles on one of the sides are 90 °
This calculator uses metres for measurements.

Right-angled trapezium = is a trapezium with 90° angles on one side making the height the same length as one of the legs.

Right-Angled Trapezium

Right Trapezium Area and Perimeter

Base Length a m
Base Length b m
Height m
Decimal Precision


Length of Diagonal m
Area of the Trapezium
Square Metres
Square Feet ft²
Square Inches in²
Perimeter of the Trapezium
Metres m
Feet ft
Inches in


  1. enter the length of base a in metres
  2. length of base b in metres
  3. the height of the trapezium in metres
  4. decimal precision, the number of digits after the decimal point


  1. the length of the diagonal in metres
  2. the area of the right-angled trapezium in square metres
  3. the area in square feet
  4. the area in square inches
  5. the perimeter of the right-angled trapezium in metres
  6. the perimeter in feet
  7. the perimeter in inches

A = (a+b)/2*h
P = a+b+ 2 legs 
where A is the area
a is a base length
b the other base length
h the height of the trapezium
P the perimeter of the trapezium

one metre (m) = 3.28083989501312 feet (ft)
one metre (m) = 39.3700787401575 inches (in)
one square metre (m²) = 10.7639104167097 square feet (ft²)
one square metre (m²) = 1550.0031000062 square inches (in²)
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