Area of the rectangle = Length $\times$ Breadth Area = $55.3 \text{ m} \times 25 \text{ m} = 1382.5 \text{ m}^2$. According to the rules for arithmetic operations with significant figures, in multiplication or division, the final result should retain as many significant figures as are there in the original number with the least significant figures . Here, the length ($55.3$ m) has 3 significant figures and the breadth ($25$ m) has 2 significant figures. Therefore, the final result must be rounded off to 2 significant figures. $1382.5 \text{ m}^2$ rounded off to 2 significant figures is $1400 \text{ m}^2$, which is properly expressed in scientific notation as $1.4 \times 10^3 \text{ m}^2$ or $14 \times 10^2 \text{ m}^2$.