-10x+3y=5 systems of equations with substitution

What is the total surface area of this square pyramid?

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

Which aspect of electronic commerce does the ftc regulate? a. encryption and transfer of data b. disposing of credit reports c. network security d. antivirus software updates