A carpenter is to use 12m of wood to construct a picture frame.what is the maximum area of the frame

Answer 1

I will assume your frame is in the shape of a rectangle.
(A circle would give you more area)
The largest area is obtained when your rectangle is a square.
So your length is 12 m and you will need 4 equal sides.

How long is each side ? (ignore length lost due to saw cut)
How do you find the area of a square?

Let me know what you get so I can check it