A rectangular milk carton has a square base of side length x centimetres and height h centimetres. The carton must hold exactly 1 000 cm3 of liquid. The material for the base and the four sides costs \0.02percm^{2},whilethematerialforthelidcosts0.05 per cm2. Write a simplified expression for the total cost C(x) (in dollars) as a function of x only.