Four sides of trapezoid

Calculate the area of the ABCD trapezoid with sides a = 65 cm, b = 29 cm, c = 40 cm, d = 36 cm

Correct answer:

S =  1512 cm2

Step-by-step explanation:

a=65 cm b=29 cm c=40 cm d=36 cm  A=a+bc+d=65+2940+36=90 cm B=abc+d=652940+36=32 cm C=a+bcd=65+294036=18 cm D=a+b+c+d=65+29+40+36=40 cm  S1=A B C D=90 32 18 40=1440 cm2  k1=4 (ac)a+c=4 (6540)65+40=2021=1.05  S=k1 S1=1.05 1440=1512 cm2



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







Tips for related online calculators
See also our trigonometric triangle calculator.

You need to know the following knowledge to solve this word math problem:


 
We encourage you to watch this tutorial video on this math problem: video1   video2

Related math problems and questions: