To find the length of \( FH \), it seems like you might be working with a triangle or a geometric relationship involving points \( F \), \( C \), and \( H \). However, to provide an accurate answer, I need some additional information or context regarding the positions of these points.
If these points are part of a right triangle, a different geometric figure, or if there is any specific relationship or theorem you're considering (like the Pythagorean theorem), please clarify.
For example, if \( C \) is the point between \( F \) and \( H \) on a straight line, we could say: \[ FH = FC + CH = 33 \text{ cm} + 13 \text{ cm} = 46 \text{ cm} \]
Please specify the geometric arrangement or any other relevant details to accurately determine the length of \( FH \).