times 9 = 15.75cm\) (You can type in your calculator 7 ÷ 4 × 9) Now try these example questions. XY is on the bigger figure, therefore we will be calculating the enlargement scale factor.

The lengths of the larger square are three times as long as the smaller square. The area of the larger square is nine times as large as the area of the smaller square. The area scale factor is 9.