Solve the following: four and seven twelfths plus six and nine twelfths

Question 5 options:

eleven and four twelfths

ten and two twelfths

two and two twelfths

one and four twelfths

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