Question

A photograph of sides $35$ $cm$ by $22$ $cm$ is mounted onto a frame of external dimension $45$ $cm$ by $30$ $cm$ . Find the area of the border surrounding the photograph.

Answer 1

Dimension of photograph is $35$cm and $22$cm.

And external dimension of photo frame is $45$cm and $30$cm

So, the area of the border surrounding the photograph$=$Area of photo frame$-$Area of photo.

So, The area of the border surrounding the photograph$=45\times 30-35\times 22$

$=1350-770=580{cm}^2$