Carrie spent 2 1/2 hours trimming bushes and 1 1/4 hours weeding the garden she is supposed to work in the yard for five hours how much longer does she need to work

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap