Trapezoid area with sides 2,4,9,8 equal to 21.93

This online trapezoid area calculator will help you find the trapezoid area. The solution can be found by five different methods.
Using this calculator, you can get a detailed step-by-step solution with an explanation and output of formulas. Thanks to this, you will be able to understand the algorithm for finding the trapezoid area.
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Trapezoid area calculation method
Base a: Base b: Side c: Side d:

Trapezoid

A trapezoid is a quadrilateral whose two sides are parallel (bases) and the other two are not parallel (sides).
Trapezoid area formula Trapezoid area formula By the lengths of all sides and bases where a and b are the bases, c and d are the sides

Solution:
S =
a+b
2
·
√c2 - (
(b-a)2+c2-d2
2·(b-a)
)2
=
2+4
2
·
√92 - (
(4-2)2+92-82
2·(4-2)
)2
=
6
2
·
√92 - (
22+92-82
2·2
)2
=
6
2
·
√81 - (
4+81-64
4
)2
= 3
·
√81 - (
21
4
)2
= 3
·
√81 - 5.252
= 3
·
√81 - 27.5625
= 3
·
√53.4375
= 3
·
7.31
=
21.93

Answer: trapezoid area with sides 2,4,9,8 equal to 21.93

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