What is the potential energy of 3.0kg object at the top of a hill 10.0 hihg as measured from the ground?

PE = m•g•h, where m is mass in kg, g is 9.8m/s2, and h is height in meters. I am going to assume that the unit for the height of the hill is the meter. PE = 3.0kg x 9.8m/s2 x 10.0m = 290kg•m2/s2 = 290N•m = 290 Joules