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 =
·
=
·
√123.52 - ((114.4-79)2+123.52-108.52
2·(114.4-79)
)2 =
·
√123.52 - (35.42+123.52-108.52
2·35.4
)2 =
·
√15252.25 - (1253.16+15252.25-11772.25
70.8
)2 = 96.7
·
= 96.7
·
√15252.25 - 66.8532
= 96.7
·
√15252.25 - 4469.323609
= 96.7
·
√10782.926391
= 96.7
·
103.841
=
10041.425
Answer: trapezoid area with sides 79,114.4,123.5,108.5 equal to 10041.425