tfarmer

ok, so my brain has taken a trip and left me behind.
I need to make 1/2 sq triangles finished 4 inches - with a seam allowance at 4.5 inches.
how big of a square do I need to start with ? over size prefered so I can trim down.
do I start with 5 or 5.5 squares????

Thanks for your help.
Happy quilting everyone.