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March 4, 2015

March 4, 2015

Posted by **Lauren** on Saturday, December 5, 2009 at 9:48pm.

I know a2 +b2=C2, but isn't it already known? Isn't the length of d just 6? Please help. Thanks,

- geometry again -
**Reiny**, Saturday, December 5, 2009 at 10:01pmIf I understand you, the sides of the pyramid consist of equilateral triangle of sides 6 units.

So a line d from the vertex bisecting the triangle would make the base 3 and the hypotenuse 6 in the new triangle.

let the height be h

h^2 + 3^2 = 6^2

Can you finish it ?

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