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A square tablecloth has a diagonal measurement of 130cm.
What is the length of one side?
Guest Mar 12, 2012
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c^2=a^2+b^2

let a=b:
c^2=a^2+a^2 = 2a^2
c^2 = 2a^2
c^2/2 = a^2
sqrt( (c^2)/2 ) = a

[input]sqrt( (1.3^2)/2 )[/input]
a=0.91923881554251 (length of one side)

test:
[input]sqrt(0.91923881554251^2+0.91923881554251^2)[/input]
admin  Mar 12, 2012

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