# parallelepiped diagonal

• December 5th 2010, 12:45 AM
killykilly
parallelepiped diagonal
I haven't been able to solve this problem for the last 3 months. Now I'm surrendering it to the thinkers out there.

Find the length of the diagonal of a rectangular parallelepiped of dimensions 6 m by 8 m by 10 m ?

I may be getting the other diagonal of 14.68 m but the book says the correct answer is 14.14 m.
• December 5th 2010, 01:21 AM
Sudharaka
Quote:

Originally Posted by killykilly
I haven't been able to solve this problem for the last 3 months. Now I'm surrendering it to the thinkers out there.

Find the length of the diagonal of a rectangular parallelepiped of dimensions 6 m by 8 m by 10 m ?

I may be getting the other diagonal of 14.68 m but the book says the correct answer is 14.14 m.

Dear killykilly,

Length of the diagonal= $\sqrt{6^2+8^2+10^2}=\sqrt{200}=14.14m$

The answer of the book is correct.