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5. We find the scale factor by dividing the larger side by the similar smaller side. But here, we see that they already tell us the scale factor because they say that each side in ABCD is 3.25 (also 3 1/4) bigger than FGHI. This means the scale factor is 3.25!
6. Just multiply each side of FGHI by 3.25 and add them together.
2 × 3.25 = 6.5
3 × 3.25 = 9.75
3 × 3.25 = 9.75
5 × 3.25 = 16.25
6.5 + 9.75 + 9.75 + 16.25 = 42.25 inches! (or 42 1/4)
