Arock was dropped from a platform on a tower 55 feet above a lake. the rock landed on the bottom of the lake, which was 21 feet under the surface of the lake. where was the rock when it had fallen halfway? 34 feet above the lake 38 feet above the lake 10.5 feet below the surface of the lake 17 feet above the lake

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "