The perimeter of frame is given 70 cm.
There are two frames given.
For first frame , calculating the perimeter .
![P=2(15+20)=2*35=70\operatorname{cm}]()
For second frame, calculating the perimeter.
![P=2(30+40)=2*70=140\operatorname{cm}]()
Hence the first frame is suitable for for a photo with a perimeter of 70 cm.
This is the frame which is suitable.