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 =
·
=
·
√87.0252 - ((288.4125-274.1125)2+87.0252-82.0252
2·(288.4125-274.1125)
)2 =
·
√87.0252 - (14.32+87.0252-82.0252
2·14.3
)2 =
·
√7573.350625 - (204.49+7573.350625-6728.100625
28.6
)2 = 281.2625
·
= 281.2625
·
√7573.350625 - 36.7042
= 281.2625
·
√7573.350625 - 1347.183616
= 281.2625
·
√6226.167009
= 281.2625
·
78.906
=
22193.299
Answer: trapezoid area with sides 274.1125,288.4125,87.025,82.025 equal to 22193.299