Two diagonals

The rhombus has a side length of 12 cm and a length of one diagonal of 21 cm. What is the length of the second diagonal?

Final Answer:

u2 =  11.619 cm

Step-by-step explanation:

a=12 u1=21 a2 = (u1/2)2 +(u2/2)2 u2=2 a2(u1/2)2=2 122(21/2)2=3 15=11.619 cm



Help us improve the example. If you find a mistake, let us know. Thank you!







Tips for related online calculators
Do you want to convert length units?
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   video3

Related math problems and questions: