First, if the frame is square then it has equal-length sides. Find the measurement of the sides.
s² = 64
s = √64
s = 8
The first dimension is 8 × 8
Second, if the frame is rectangle, it would have length and width. For example the length is 16 inches.
w = 64/l
w = 64/16
w = 4
The second dimension is 16 × 4
There are more possibilities if the frame is rectangle, but i choose the simplest dimension.
So, the answers are 8 × 8 and 16 × 4