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## Homework Statement

As you eat your way through a bag of chocolate chip cookies, you observe that each cookie is a circular disk with a diameter of 8.50+-0.02cm and a thickness of 0.050+-0.005cm.

## Homework Equations

a. Find the average volume of of a cookie and the uncertainty in the volume.

b.Find the ratio of the diameter to the thickness and the uncertainty in the ratio.

## The Attempt at a Solution

The answer for a is 2.8+-0.3cm

The answer for b is 170+-20cm

Can someone please show how . Thanks.