The formula for the surface area of a cube is: SA= 6((length of side)^2). So if the surface area is 96, first divide by 6. And you get 16. Next you find the square-root of 16 and get 4. So the length of each side is 4 inches. The formula for volume of a cube is V=(length of side)^3. So 4 raised to the third power is: 4*4*4. The volume of the cube is 64 inches cubed.
Perpendicular bisector because it is perpendicular to the bottom segment (forgot what the letters were sorry lol) and also bisecting that segment hope this helps!
