Question

PLEASE HELP: If the length of each of the cube shown in figure 26 is 5 cm, find the length of diagonal GD. find the length of diagonal GB. :
http://i47.tinypic.com/2zq7ms8.png

Answer 1

gd=5root2
gb=5root3

Answer 2

Do you see why?

Answer 3

nop

Answer 4

To calculate the diagonal GD, if you will look at your diagram you will see that GD is the hypotenuse of a right triangle formed by GCD. Can you visualize this?

Answer 5

yes

Answer 6

The legs are GC and CD and they are 5 cm in length.

Answer 7

Using pythagorean's theorem \[GD=\sqrt{5^{2}+5^{2}}=\sqrt{50}=\sqrt{25}\sqrt{2}=5\sqrt{2}\]Did you follow those steps.

Answer 8

kind of

Answer 9

Do you see how GD was obtained?\[(GD)^{2}=(GC)^{2}+(CD)^{2}\]\[GD=\sqrt{(GC)^{2}+(CD)^{2}}\]CG=5 cm
CD=5 cm

Answer 10

Does that explain how the GD was calculated.

Answer 11

If you can't grasp the method we solve for the diagonal GD,there is no need to try to solve diagonal GB.

Answer 12

Take a few minutes to review all the posts above.