Arusha draws a rectangular prism that is made up of two connected cubes, each with side length e. The surface area of a certain rectangular prism with edge length is represented by the formula SA= \(10e ^{2}\), and the volume of the prism is represented by the formula V= \(2e ^{3}\).


Part A- What is the surface area of the prism if its edge length is 5 cm? Show work


Part B- Arusha plans to build the prism and partially fill it with 150 cubic centimeters of sand. What fraction of the prism's volume will be filled by the sand? Show Work.