26. Estimating costs for a construction project, the following data is available:

Activity	Estimated Cost ($)
Excavation	40,000
Foundation	50,000
Framing	60,000
Roofing	45,000

Your requirements are as follows:

• Calculate the total estimated cost for the project.
• Present the estimation process in a table.
• Provide a paragraph discussing the methodology used for cost estimation.
• Discuss potential sources of uncertainty in cost estimation.
• Include a bullet list of risk mitigation strategies.