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September 19, 2014

September 19, 2014

Posted by **shonye** on Wednesday, February 13, 2013 at 12:06pm.

- math -
**Steve**, Wednesday, February 13, 2013 at 12:26pmthe 4x6 photo has area 24 in^2

So, the frame has area 120-24 = 96 in^2

If the frame has width x, then its area is

2(4x) along the ends

+2(6x) along the sides

+4x^2 on the corners

so,

4x^2 + 8x + 12x = 96

x^2 + 5x - 24 = 0

x = 3

So, the frame is 3in wide

check:

total dimensions are 10x12, so area = 120

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