Room Layouts & their Uses. The best way to layout a room is dependant on a number of factors including: ï· The space available. ï· The size of the audience. ï· The level of activity and interaction required. There are 6 main styles which are described below. Theatre Style. Theatre style seating allows the most people for a given. size of room.
Answer: Brass is an alloy made primarily of copper and zinc. The proportions of the copper and zinc are varied to yield many different kinds of brass. Basic modern brass is 67% copper and 33% zinc. However, the amount of copper may range from 55% to 95% by weight, with the amount of zinc varying from 5% to 40%.
Brass, which is an alloy of copper and zinc, has been used since at least the 10th century BC in Judea and by the 7th century BC in Ancient Greece. Zinc metal was not produced on a large scale until the 12th century in India and was unknown to Europe until the end of the 16th century.