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 =
·
=
·
√84.152 - ((289.575-272.25)2+84.152-81.6752
2·(289.575-272.25)
)2 =
·
√84.152 - (17.3252+84.152-81.6752
2·17.325
)2 =
·
√7081.2225 - (300.155625+7081.2225-6670.805625
34.65
)2 = 280.9125
·
= 280.9125
·
√7081.2225 - 20.5072
= 280.9125
·
√7081.2225 - 420.537049
= 280.9125
·
√6660.685451
= 280.9125
·
81.613
=
22926.112
Answer: trapezoid area with sides 272.25,289.575,84.15,81.675 equal to 22926.112