math

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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?

• math -

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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