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Measuring Size

The thickness...

Question

The thickness of a glass plate is measured to be 2.17 mm, 2.17 mm and 2.18 mm at three different places. Find the average thickness of the plate from this data.

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Solution

We know that, average thickness = $\frac{2.17 + 2.17 + 2.18}{3}$

= 2.1733 mm

Rounded off to 3 significant digits, Average thickness = 2.17 mm

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