Question 1188988
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Let x be the width of the strip of mat around the picture.<br>
Then the dimensions of the mat are (50+2x) cm by (38+2x) cm.<br>
The perimeter of the mat (twice length plus twice width) is 256 cm:<br>
2(50+2x)+2(38+2x)=256
100+4x+76+4x=256
8x=80
x=10<br>
ANSWER: The strip is 10cm wide<br>