Question

A showroom for a car dealership is to be built in the shape of a rectangle with brick on the back and side and glass on the front. The floor of the showroom is to have an area of 500 m². A brick wall costs $1200/m and a glass wall cost $600/m. The height of the showroom is preset and included in the price of the wall. What dimensions would minimize the cost of the showroom?

- thank you in advance! :)

Answer 1