Nfer 11c Question 48...can you help??

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yoyo123
Posts: 8099
Joined: Mon Jun 18, 2007 3:32 pm
Location: East Kent

Nfer 11c Question 48...can you help??

Post by yoyo123 »

question has a hexagon, side measures y, centre to flat side = x

which is\formula for the area of this shape?

answer is 3(xy).


can you help me explain this??

Sorry brain freeze again
Guest55
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Joined: Mon Feb 12, 2007 2:21 pm

Post by Guest55 »

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.
yoyo123
Posts: 8099
Joined: Mon Jun 18, 2007 3:32 pm
Location: East Kent

Post by yoyo123 »

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. :lol:
Guest55
Posts: 16254
Joined: Mon Feb 12, 2007 2:21 pm

Post by Guest55 »

It has to to show its perpendicular to the base (side of the hexagon)
yoyo123
Posts: 8099
Joined: Mon Jun 18, 2007 3:32 pm
Location: East Kent

Post by yoyo123 »

durr!
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