Question

PLEASE HELP: If the length of each of the cube shown in figure 26 is 1 inch, find the length of diagonal CH. find the length of diagonal CF:
http://i47.tinypic.com/2zq7ms8.png

Answer 1

Calculate CH first using pythagorean theorem.
\[CH=\sqrt{1+1}=\sqrt{2}\]

Answer 2

Now do CF next. again using pythagorean.\[CF=\sqrt{2+1}=\sqrt{3}\]

Answer 3

This is the result of CH squared +HF squared taking the square root of their sum

Answer 4

@tryder, did you follow with understanding?

Answer 5

yes and is this the pythagorean theorem. a^2+b^2=c^2

Answer 6

Yes, where a and b are legs, and c is the hypotenuse of a right triangle.

Answer 7

Note the triangle formed with diagonal CH (hypotenuse) and legs CD and DH