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 =
·
=
·
√4.952 - ((68.0625-80.4375)2+4.952-18.56252
2·(68.0625-80.4375)
)2 =
·
√4.952 - (-12.3752+4.952-18.56252
2·-12.375
)2 =
·
√24.5025 - (153.140625+24.5025-344.56640625
-24.75
)2 = 74.25
·
= 74.25
·
√24.5025 - 6.7442
= 74.25
·
√24.5025 - 45.481536
= 74.25
·
√-20.979036
= 74.25
·
NAN
=
NAN
Answer: trapezoid area with sides 80.4375,68.0625,4.95,18.5625 equal to NAN