To find the length of the height of the cone, we can use the Pythagorean theorem.
The slant height of the cone (13 centimeters) represents the hypotenuse of a right triangle, with the height of the cone as the opposite side and half of the diameter (d/2 = 5 centimeters) as the adjacent side.
Using the Pythagorean theorem:
height^2 + (d/2)^2 = slant height^2
height^2 + 5^2 = 13^2
height^2 + 25 = 169
height^2 = 169 - 25
height^2 = 144
Taking the square root of both sides, we get:
height = √144
Therefore, the length of the height of the cone is 12 centimeters.