56. Estimate costs for a software development project using the following data:

Activity	Estimated Cost ($)
Planning	80,000
Development	100,000
Testing	70,000
Implementation	90,000

Requirements:

• Calculate the total estimated cost for the project.
• Present the estimation process in a table.
• Explain the methodology used for cost estimation.
• Identify potential sources of uncertainty in the estimation.
• Provide strategies for managing cost uncertainties.