#1**+2 **

9. The scale factor between the larger figure and the smaller one is = 10 : 8 = 5 : 4

Since perimeter is a linear measure, it has the same ratio, 5 : 4

The area ratio is the square of the scale factor = 25 : 16

10. The scale factor between the larger figure and the smaller one is 57 : 24

So.....the area of the larger figure is (scale factor)^2 as much as that of the smaller figure

So....

564 (57/24)^2 ≈ 3181 m^2

CPhill
Apr 21, 2017