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 .

Answer 1

(2.17+2.17+2.18)/3
= 2.173333

Answer 2

Thanks for asking the question!

ANSWER::

Average thickness = (2.17 + 2.17 + 2.18) / 3 = 2.1733 mm

Now , rounding off to 3 significant digits , average thickness = 2.17 mm

Hope it helps!