Diagonals of rhombus

Find the length of the diagonal AC of the rhombus ABCD if its perimeter P = 112 dm and the second diagonal BD has a length of 36 dm.

Correct answer:

AC =  42.9 dm

Step-by-step explanation:

P=112 dm BD=36 dm  P=4a a=P/4=112/4=28 dm  a2 = (DB/2)2 + (AC/2)2  AC=2 a2(BD/2)2=2 282(36/2)2=4 115=42.9 dm



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.

 
We encourage you to watch this tutorial video on this math problem: video1   video2   video3

Related math problems and questions: