Circumference 26361

The ABCD diamond has a circumference of 72 cm. The longer diagonal of the animal with the line segment AB angle is 30 °. Calculate the area of the ABCD diamond.

Correct answer:

S =  280.5922 cm2

Step-by-step explanation:

o=72 cm A=30  α=2 A=2 30=60   o=4a a=o/4=72/4=18 cm  sinα=h:a h=a sinα=a sin60° =18 sin60° =18 0.866025=15.58846 cm  S=a h=18 15.5885=162 3=280.5922 cm2



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







Tips for related online calculators
See also our right triangle calculator.
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: