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Geometry Question on Quadilaterals - Square

Expert replies
by kkrish » Sun Nov 07, 2010 9:57 am
1). If I have a Square that has a Diagonal that is 10"; Can I say the Area is = 1/2 (Diagonal ^2) = 50
and therefore each side is approximately 7" as Area of a Square is S^2?


If you said Yes to the first question, I also know Diagonal to Square Side is D : S^2, that doesn't seem to add up..
Any insight is appreciated..

KK
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Source: — Problem Solving |

by earnest10 » Sun Nov 07, 2010 10:17 am
Given that the Diagonal of the square is 10" : 100 = s^2 + s^2

2s^2 = 100 ; s = 5*(2^1/2)

Area of a Square is s^2

Area = (5*(2^1/2))^2 = 50
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