Length of the bases and h is the height, to answer the question. how many square feet of grass are there on trapezoidal field with a height of 75 ft and bases of 125 ft and 81 ft?<span>"= 7,725 ft²" </span> Hope This Helped, Joce5042 Your Welcome :)
D is correct. The idea here is to ensure that the point on the post is equidistant from the bottom of the post (where it meets the ground), which in turn ensures that the angle between ground and post is 90° in at least two places on the ground.