In the isosceles trapezoid ABCD we know: AB||CD, |CD| = c = 8 cm, height h = 7 cm, |∠CAB| = 35°. Find the area of the trapezoid.

Correct answer:

A =  69.9793 cm2

Step-by-step explanation:

c=8 cm h=7 cm CAB=35   tanCAB=h:(c+x)  x=h/tanCAB°c=h/tan35° c=7/tan35° 8=7/0.7002088=1.99704 cm  a=c+2 x=8+2 1.99711.9941 cm  A=2a+c h=211.9941+8 7=69.9793 cm2

Did you find an error or inaccuracy? Feel free to write us. Thank you!


Tips to related online calculators
See also our right triangle calculator.
Most natural application of trigonometry and trigonometric functions is a calculation of the triangles. Common and less common calculations of different types of triangles offers our triangle calculator. Word trigonometry comes from Greek and literally means triangle calculation.

We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: