A trapezoid is a quadrilateral whose two sides are parallel (bases) and the other two are not parallel (sides).
Trapezoid area formula
where a and b are bases, h is height
A trapezoid is a quadrilateral whose two sides are parallel (bases) and the other two are not parallel (sides).
Trapezoid area formula
where m is the middle line, h is the height
A trapezoid is a quadrilateral whose two sides are parallel (bases) and the other two are not parallel (sides).
Trapezoid area formula
where d1,d2 are diagonals, α° is the angle between them
A trapezoid is a quadrilateral whose two sides are parallel (bases) and the other two are not parallel (sides).
Trapezoid area formula
where a and b are the bases, c and d are the sides
A trapezoid is a quadrilateral whose two sides are parallel (bases) and the other two are not parallel (sides).
Trapezoid area formula
where r is the radius of the inscribed circle, α° is the angle between the base and the side
Solution:
S =
·
=
·
√3.842 - ((0.53-2.89)2+3.842-4.242
2·(0.53-2.89)
)2 =
·
√3.842 - (-2.362+3.842-4.242
2·-2.36
)2 =
·
√14.7456 - (5.5696+14.7456-17.9776
-4.72
)2 = 1.71
·
= 1.71
·
√14.7456 - -0.4952
= 1.71
·
√14.7456 - 0.245025
= 1.71
·
√14.500575
= 1.71
·
3.808
=
6.512
Answer: trapezoid area with sides 2.89,0.53,3.84,4.24 equal to 6.512