Estimate and compare construction costs for different years in the same city. To estimate the national average construction cost of a building in 1970, knowing that it cost $900,000 in 2016: INDEX in 1970 = 28.7. INDEX in 2016 = 207.2. Note: The city cost indexes for Canada can be used to convert.
The four types of landforms are: Mountains, Plains, Plateaus and  Valleys. These types of landforms can be found in any part of the  world. Landforms also have different ide â¦ ntifying characteristics. Answered.
An island landform is land that is completely surrounded by water. It can be any. type of land. The island can also be surrounded different types of water such as a sea, ocean, river and lake. There are a lot of famous islands in the world. One of the most famous island landforms are the Hawaii islands.