A 7 by 5 photo was enlarged. The length and width were enlarged 125%. Find the perimeter of the phot | MathCelebrity Forum

A 7 by 5 photo was enlarged. The length and width were enlarged 125%. Find the perimeter of the phot

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A 7 by 5 photo was enlarged. The length and width were enlarged 125%. Find the perimeter of the photo.

Enlarge length 125%: 7 * 1.25 = 8.75
Enlarge width 125%: 5 * 1.25 = 6.25

Perimeter of the enlarged photo is 2l + 2w, so we have:
P = 2(8.75) + 2(6.25)
P = 17.5 + 12.5
P = 30
 
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