Hello,
We know that the ratio between the photo of the painting to the painting is 1/3 which means that the size of the painting is 3 times bigger than the photo of the painting.
Length of the painting:
17×3=51 inches
Width of the painting:
13×3=39 inches. As a result, the length of it is 51 inches, and the width of it is 39 inches. Hope it help!
