Answer
The smallest area: 6400 m² = 6.4 $\times$ $10^{3}$ m².
The largest area: 8250 m² = 8.25 $\times$ $10^{3}$ m².
Work Step by Step
The smallest area: 100 m $\times$ 64 m = 6400 m² = 6.4 $\times$ $10^{3}$ m².
The largest area: 110 m $\times$ 75 m = 8250 m² = 8.25 $\times$ $10^{3}$ m².
