A thin circular sheet of aluminum has a radius of 20 cm and a thickness of 0.50 mm. Find the mass of the sheet.

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Rather than solving this for you, I will provide some guidance.

Here are the steps that I would take to solve this problem.

1. Find the volume of the piece of aluminum. Based on the given information I would use a formula for the volume of a cylinder.

2. Do some research to find the density of aluminum.

3. Use the formula for density using the data collected from 1 and 2 above to solve for the mass.