Area of a trapezoid
Answers are for parents and teachers.
1
The bases of a trapezoid are 11 cm and 19 cm, the altitude is 8 cm. What is its area (cm²)?
120
2
A trapezoid has midline 14 cm and area 98 cm². What is its altitude (cm)?
7
3
A right trapezoid has bases 10 cm and 16 cm, and the leg perpendicular to the bases is 7 cm. What is its area (cm²)?
91
4
The diagonals of an isosceles trapezoid are perpendicular and its area is 196 cm². What is its altitude (cm)?
14
5
Write the trapezoid area formula using the midline and explain why it is correct.
S = m · h, because the midline equals half the sum of the bases.