elaine and Daniel are building a rectangular greenhouse.they want the are of the floor to be 36metres squared.since the glass walls are expensive,they want to minimise the amount of glass wall they use.they have commissioned you to design a greenhouse which minimizes the cost of the glass walls.if the greenhouse is to have a height of 2metre and the price of the glass from clear view glass is R46.75,what will it cost to purchase the glass for the walls of the greenhouse?