a picture frame measures 13 in by 9 in. There is 88^2 of the picture showing. the frame is uniform in thickness. Find the thickness of the frame.

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- Oct 22nd 2008, 08:02 PMmathdummy22What would be the answer to this problem?
a picture frame measures 13 in by 9 in. There is 88^2 of the picture showing. the frame is uniform in thickness. Find the thickness of the frame.

- Oct 22nd 2008, 08:36 PMShyam
- Oct 22nd 2008, 09:26 PMterr13
Assuming you mean 88 in, the total area of the painting is 13*9. The area shown is 88. If it is uniformly thick all around, we can subtract the thickness form the painting.

$\displaystyle (13-n)(9-n) = 88$ Solve the quadratic, and then divide n by 2, since we are counting for two sides combined (top and bottom or left and right) - Oct 23rd 2008, 04:14 AMmathdummy22
its 88 in^2