How do you increase 360g by 12.5%

Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?

How do you find the distance of each number from the mean

Plzzz answer both questions and i will give you 100 points