A uniform border on a framed photograph has the same area as the photograph. What are the outside dimensions of the border if the dimensions of the photograph are 25cm by 20cm?

What would a diagram for this question look?

Printable View

- April 25th 2010, 12:52 PMsinjid9Help with diagram
A uniform border on a framed photograph has the same area as the photograph. What are the outside dimensions of the border if the dimensions of the photograph are 25cm by 20cm?

What would a diagram for this question look? - April 25th 2010, 01:21 PMArchie Meade
Hi sinjid9,

the attachment shows a diagram.

You can either subtract the photo area from the area inside the outer

perimeter of the frame

or add up the areas inside the border

Hence, you must solve

As this doesn't factorise easily, use

to find x.

You should get a value slightly greater than 4