Question about Computers & Internet
The formulae for the surface area of round disc is
pi * r * r
where pi=3.14 and r =radious of disc= diametre/2
for this 1st u have 2 calculate the radious of the disc that is
then convert it to m by dividing 1000 ,so radious=90/1000=0.09 m
finally calculate the area= 3.14 * 0.09 * 0.09=0.025434 sq metres
for 38 disc multiply 38 with the above area that is
0.025434 * 38=0.966492 sq metres
in excel 2007 u can do it more easily by going 2 formulas tab.
Under formla tab click on engineering formula and then convert
here u can convert from mm to m
after converting use the above formula i just told u.
Posted on Feb 27, 2008
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Posted on Jan 02, 2017
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