Spike's Calculators

Calculate the area and perimeter of a scalene trapezium (trapezoid). A scalene trapezium is a shape where two different length bases run parallel to each, and the connecting legs have different lengths.

This calculator can be used for different types of trapeziums (isosceles, right-angled, obtuse) when you know the length of all four sides.

Scalene trapezium = all sides having a different length, and the four angles are unequal.

- enter the length of base a in metres
- length of base b in metres
- the length of leg c in metres
- length of leg d in metres
- decimal precision, the number of digits after the decimal point

- the height of the trapezium in metres
- the area of the scalene trapezium in square metres
- the area in square feet
- the area in square inches
- the perimeter of the scalene trapezium in metres
- the perimeter in feet
- the perimeter in inches

```
0.5hy= √(s(s-c)(s-d)(s-y))
A = (a+b)/2*h
P = a+b+c+d
where h is the height of the trapezium
y the length of the base = b - a
s = 0.5(c+ d + y)
a is the short base length
b the long base length
c the length of a leg
d the length of the other leg
A is the area
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)