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 =
·
√c^{2} - ((b-a)^{2}+c^{2}-d^{2}
2·(b-a)
)^{2} =
·
√2.1^{2} - ((3.38-7.14)^{2}+2.1^{2}-2.7^{2}
2·(3.38-7.14)
)^{2} =
·
√2.1^{2} - (-3.76^{2}+2.1^{2}-2.7^{2}
2·-3.76
)^{2} =
·
= 5.26
·
= 5.26
·
√4.41 - -1.497^{2}
= 5.26
·
√4.41 - 2.241009
= 5.26
·
√2.168991
= 5.26
·
1.473
=
7.748
Answer: trapezoid area with sides 7.14,3.38,2.1,2.7 equal to 7.748