7.25 x 2 1/2= WHAT PS HELPPP

Rewrite the following without an exponent. (5/8)-1

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

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.