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 Post subject: Nfer 11c Question 48...can you help??Posted: Sat Sep 13, 2008 8:22 am

Joined: Mon Jun 18, 2007 2:32 pm
Posts: 6962
Location: East Kent
question has a hexagon, side measures y, centre to flat side = x

which is\formula for the area of this shape?

can you help me explain this??

Sorry brain freeze again

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 Post subject: Posted: Sat Sep 13, 2008 8:28 am

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11932
A hexagon can be split into six triangles if you join the vertices to the centre. Each triangle has area half (xy) ... so 6 x this is 3xy.

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 Post subject: Posted: Sat Sep 13, 2008 8:33 am

Joined: Mon Jun 18, 2007 2:32 pm
Posts: 6962
Location: East Kent
Thank you so much!

I was a bit thrown by the fact that the line goes from the middle to half way on the flat side if you see what I mean.

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 Post subject: Posted: Sat Sep 13, 2008 8:38 am

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11932
It has to to show its perpendicular to the base (side of the hexagon)

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 Post subject: Posted: Sat Sep 13, 2008 8:42 am

Joined: Mon Jun 18, 2007 2:32 pm
Posts: 6962
Location: East Kent
durr!

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