How high is the hill Cumorah from base to top?

I don't know exactly, but I'd guess about 125 feet. I wasn't too far off. Wikipedia says it's 110 ft.

Around 110 feet. There are two ways to walk up, a dirt path through the woods on the North end or a paved walkway on the West side. Both are pretty steep. The third way up is by vehicle. There is a paved road that goes up and a small parking lot at the top.

Around one hundred and ten feet. The pathway from the south end parking lot over to the monument is a little bit higher. As others have stated there are three different ways to get to the monument. North end foot path through the woods. South West side up a paved golf cart path. And then the loop around roadway that starts out on the North end and goes around the east side to the south end back towards the north and stop's at a parking area.