Posted by **Joanne** on Thursday, December 4, 2008 at 12:06pm.

A rectangle picture window is 4 ft. by 7 ft. Polly wants to put a trim molding around the window. How many feet of molding should she buy?

Do I just add both sides to get my answer?

- math -
**Cianán**, Thursday, December 4, 2008 at 12:09pm
Well a picture frame has 4 sides so you need to add the length of all of them.

In other words: 2 lengths + 2 widths

the answer is: 4 + 4 + 7 + 7 = 22ft

You are being asked, in effect, to calculate the perimeter of the photo frame.

Ok,

Hope that helps!

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