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April 21, 2014

April 21, 2014

Posted by **HELP HELP HELP MNHS** on Wednesday, January 30, 2013 at 4:06am.

with solution pls, tnx...

- math -
**Reiny**, Wednesday, January 30, 2013 at 8:24amlet the length of the overlap be x

then 8+8-x=12

x=4

So now you can construct a right-angled triangle by joining one of the centres to X

Its hypotenue will be 8

and its base will be 8 - (1/2)of4 = 6 and its height is 1/2 of XY, call it h

h^2 + 6^2 = 8^2

h^2 = 64-36 = 28

h = √28 = 2√7

So XY = 4√7

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