Answer :
32 ft;
1. 64/2=8 per each side
2. 8+8+8+8= 32ft ( add 8 four times as a frame covers the perimeter of the canvas)
1. 64/2=8 per each side
2. 8+8+8+8= 32ft ( add 8 four times as a frame covers the perimeter of the canvas)