# Chapter 8 - Geometry - 8.3 Rectangles and Squares - 8.3 Exercises: 5

A = 0.81 km$^{2}$ P = 3.6 km

#### Work Step by Step

Perimeter = P P = 4$s$ P = 4 * 0.9 km P = 3.6 km Area = A A = s$^{2}$ A = 0.9 km$^{2}$ A = 0.81 km$^{2}$

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