1. You are the project manager assigned to install the electrical wiring for a 20,000 square foot office building that is currently under construction. You are trying to estimate the costs of this project. You know from past experience that is costs approximately $3 per square foot to properly wire and entire building. As your building will be 20,000 square feet you estimate that the project will cost approximately $60,000. What type of estimating technique did u used?