Please help me find the volume for 1,2,7,8

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12