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December 21, 2014

December 21, 2014

Posted by **Emma** on Thursday, September 30, 2010 at 9:06pm.

What is the Surface area of a glass bead that has the diameter of 11m? Express your answer to the nearest square mm.

radius= .0055m

radius^2= 5.5E-3 ^ 2=30.25 E-6m

4PIr^2= about 12*30.25E-6 m

- math-bobpursely -
**bobpursley**, Thursday, September 30, 2010 at 9:30pmE means 10^

E2 means 10^2 or 100

e-6 means .000001

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