1 From the distance from the center of the earth to the peak of the mountain.  As mountains are generally measured from sea level, Mount Everest 29,035 ft (8,850m) is considered to be king. However, there is a difference between the highest and tallest.
You can buy acoustic ceiling tiles in either 2'x2' or 2'x4' sizes. It will cost about $1,000-$1,700 to install an acoustic ceiling system in an average 12'x14' room. Most contractors will charge between $2 and $5 per square foot for labor. A modest set of 12, 2x2 tiles can cost from $25-$40. There are more extravagant tiles which can cost as much as $100 for a set of 12.
1 Cost can also be affected by cost of living in your area and the company. 2  Generally, professionals who undertake the removal will charge $1-$3 per square foot. 3  If you have a 15â² by 15â² ceiling, for example, it can cost you between $300-$600; it can even be as much as $1,000. The average cost of acoustic ceiling removal will be determined by the overall condition of the ceiling, its size, cost of materials for removal, cost of labor, and the cost of repainting/retexturing the ceiling. 2  Cost can also be affected by cost of living in your area and the company.